13 INSANE New Isaac Bosses!!! - Full Boss Butch Showcase

[@SlayXc2]

This mod is so insane! I'm in love with Tabacadabra, he is so cute

[@salt_statue]

Personally I think Sparky is my favourite one, but I also love Tarbacadabra because of the pun! (Also I can't believe you got his name wrong, smh. /j)

[@draw2death421]

I believe mournmurus is a refrence to that one enter the gungeon wall boss.

[@voxe1155]

"TAR"bacadabra not "TA"bacadabra

[@failtronic2646]

tarbacadabra also has the best death animation. BONK!

[@Judas-xp2fl]

Fun fact : Mornmurus is a reference too a boss from Enter the Gungeon

[@jabrio3584]

Mirage changing depending on what side of the mirror you are is incredible attention to detail

[@joe____]

Yeah that's fucking awesome

[@ThorDude]

What got me was the interaction with cleaver. Easy decision to download.

[@mikethegoo]

And the cleaver just pulling a Dark Esau birthright is so cool too!

[@cookies_and_mustard6414]

The Duke Bloat was probably the most effective fakeout I’ve seen in a mod. I genuinely thought I was having mod compatibility issues and was caught so off guard! This is a great mod!

[@Burger5625]

It's amazing and terrifying at the same time

[@Kyuorsomethingidk]

Oh phew the duke of flies the easiest boss ever thank goodness this will be an easy run OH MY FUCKING GOODNESS IT'S THE BLOAT

[@lololol24ttttt36]

@@Kyuorsomethingidk”oh wow it’s the duke this will be easy, wait is that? OH COME ON”

[@langologeek8073]

Honestly, I aspects see bloat pop out from monstro it's point

[@klaus.sfc01official30]

Wouldn't that be a great idea? A mod where the bloat pops out of every boss ;) I am just joking please don't kill me =:

[@witchamy]

small detail: tarbacadabra gains his own spotlight if the floor has curse of darkness!

[@seraphimhead553]

Thats awesome

[@Da_ComputerMonster]

Hi Amy; Thanks for making such awesome Mods

[@Pinga-lz7rb]

@@Da_ComputerMonster What.

[@Cole_Is_A_Mole]

@@Pinga-lz7rbthey must think Amy made this. (I'm 99% sure she hasn't)

[@nightmaregamer1410]

I find it cute that he makes isaac walk in the shape of a heart in the beginning :3

[@mr.boxhead4075]

Slay our beloved

[@ProfX501]

And with Mozzie’s tears at the end

[@Battler-k8y]

13:08 I like how it’s a noticeable reference to The Wall from Enter The Gungeon. I have no idea how people can make such unique bosses. Imagine the time they had to take coding and designing and even animations everything into not only this boss, but all the other bosses in this mod.

[@Not-olyo]

LETS GO I FOUND OTHER PEOPLE WHO PLAY ENTER THE GUNGEON RAHHHHHHHH

[@mcyum6815]

GRAH

[@nikofoundaniphone1109]

@@Not-olyolike most of gungeon players are isaac players

[@Vulphiz]

Glad to know I wasn’t the only one that got major Wallmonger vibes from Mournmurus

[@asierx7047]

Gotta love how the very first attack it makes is a wallmonger attack as well, down to projectile color.

[@mcyum6815]

Vade retro kills dust devil when he’s at half health

[@chrisbait]

​@schizopenguin Damn it, you beat me to it.

[@MilkmanWasHere]

hi mcyum

[@brysonwelshbalmer56]

​@schizopenguinshe's 🤓

[@mcyum6815]

@@MilkmanWasHere hi milkman

[@jma0645]

The randomness of boss description remain me a lot of the almanac from planets vs zombie This is one of the coolest mods I have seen in a while

[@Pinga-lz7rb]

lul

[@FunnyMan69-ci9yk]

​@@Pinga-lz7rbguys, no matter what, NEVER translate that to english

[@Pinga-lz7rb]

@@FunnyMan69-ci9yk doesn’t that mean a goofier version of LOL?

[@FunnyMan69-ci9yk]

@@Pinga-lz7rb it said translate to English and when I did it changed it to d***

[@Pinga-lz7rb]

@@FunnyMan69-ci9yk that’s creepy.

[@an_annoying_cat]

brainrot using the laser attack from the witness that didnt get carried over from antibirth is genius

[@conorsmith4102]

I thought you were gonna reference hours

[@thegreatautismo224]

I thought Radical Rat seemed super out of place at first, both in theming and spritework. I thought he was some kind of self-insert or something, but him being from Mewgenics makes much more sense

[@friendlyyoutubecommenter4527]

I thought he was from Super Mario Bros. 2 (the USA one, not the Japan one)

[@icetide9411]

At first I thought Mozzie was just okay, but giving her completely different variations based on the different types of mosquito enemies is such a cool idea. Especially since there is one specifically designed for the Fiend Folio electric mosquitos

[@holeofdarn]

she’s “fiend folio compatible” 🤢

[@zelpyzelp]

@@holeofdarn What's wrong with Fiend Folio lol

[@holeofdarn]

@@zelpyzelp It perfectly sums up why I hate most mods and mod creators: _They feel the need to add unfunny jokes and their own twisted ideologies into their mods. On top of that, it makes the game twice as hard for little to no payoff._

[@zelpyzelp]

@@holeofdarn Twisted ideologies???

[@xyrongonzalez3833]

@@holeofdarn what is bro yapping about 💀

[@betoneiracromadarebaixada8187]

"The duke of bloat" _What the fuck did you just bring upon this cursed land_

[@MaladaptiveDaydreamerr]

Blame the Four Souls team.

[@butternykeYT]

@@MaladaptiveDaydreamerrand me for owning a copy of the card

[@Shaydee_boi]

The Bloat of Flies

[@pixelplz]

man I wish there was a mod to add 13 insane new bosses butch:

[@Dr.MyfatBALLSinOhio]

And more is going to come? After you take a break of course..... I do hope you add more floor specific bosses to afterbirths alt floors because they have are really empty Also...... Please for the love of god rework turdlings and dangle they are the laziest isaac bosses EVER made

[@flamekiller3338]

@@Dr.MyfatBALLSinOhio go make your own mod if you want it so bad

[@Dr.MyfatBALLSinOhio]

@@flamekiller3338 >current year >having a skyrim pfp My man is living in ohip 😂😂😊

[@owennelson5814]

@@Dr.MyfatBALLSinOhio 1. Who gives a fuck about pfps in 2024 2. I agree. You make your own mod if you want what you want so bad 3. "Ohip" Bro just embarrassed himself ☠️ 4. You do not know if flame lives in Ohio anyway

[@colorfulcookie8961]

​@@Dr.MyfatBALLSinOhio aren't you also the one on the video about this mod make by IsaacGuru and complain about THEIR music choices?

[@larlwheezer2334]

im not usually a fan of isaac's toilet humor, but i love how Bart is based on the classic flaming bag of shit prank

[@notloopers1110]

im sorry, based on the classic WHAT?

[@genericguymandude]

i dont remember this prank at all 😭

[@KillaSardinez5656]

For anyone curious, it’s like the prank where you put shit into a brown bag and put it at someone’s front door and light it on fire, basically the whole deal is that you get the person to come out and stomp on the bag to put out the fire, but then they get shit all over their foot

[@notloopers1110]

@@KillaSardinez5656 man pranks were fucking CRUEL back in the day

[@yuvi3000]

It would be epic if using Mom's foot via cards, items etc had an interaction with this.

[@rektbiich4585]

The lore behind the Duke of Flies and Bloat is heartbreaking...Duke just wanted to enjoy life with his family of flies and Bloat literally, with 0 consent, takes away his body....

[@witchamy]

dont worry, they're good buddies and they both consented to this

[@rektbiich4585]

@@witchamy dont insult the innocence of Duky like this!

[@purple_fella]

​@@rektbiich4585 Their title says "friendship"

[@the_sund]

If I correctly remember, Radical Rat will be the boss in Edmund's next game, Mewgenics

[@Gabzew]

yup

[@ClefTheMouse]

This boss has to be a reference to Mouser from Super Mario Bros. 2, no? Those sunglasses, attacking by throwing bombs?

[@lordpumpkinhead265]

@@ClefTheMouse I was thinking The Resourceful Rat from Enter the Gungeon.

[@steponkusceponas4085]

correct

[@mcyum6815]

@@lordpumpkinhead265I was thinking of the mouse from Kirby squeak squad the one with the hat one

[@lazysheetghost]

sparky actually lighting up the wall in their boss portrait was an insane surprise and for such a small detail too :0

[@Gleb_da_gunpowder_barrel_186]

He's a sigma mail, no clue

[@RCGC480]

I love how they made a boss card from Four Souls into an actual boss. That's a really cool reference!

[@WhimsicottFanatic]

Makes me wonder if, in the probable far future when McMillan does make an Isaac 2, he's gonna pump a lot of Four Souls-related stuff into it And hopefully a good number of references to other projects of his like End is Nigh and Mewgenics to help fill the absence of Meat Boy stuff

[@Pinga-lz7rb]

You mean the Radical Rat from Mewgenics?

[@elenahaya1195]

​@@Pinga-lz7rbPretty sure that they mean Duke Bloat

[@norman28BR]

14:34 We got Plantera in Isaac before GTA VI

[@holeofdarn]

that’s what i was thinking, and i just beat her in terraria 😭

[@fly6_vids]

Twice!

[@Da_ComputerMonster]

Huh, I thought that was Manhandler from Zelda

[@RediCyansDump]

13:01 And we also got Wallmonger

[@hgfwasreal]

The one before tulip was literally wall of flesh

[@GalactaKiller]

I love how Fiend's Folio is so famous every mod has to be compatible with it haha Also, Mournmurus is just Mallmonger from Enter the Gungeon, and I love it

[@SrakenKraken]

fiend folio has become the calamity mod of tboi

[@GalactaKiller]

@@SrakenKraken Not that it bothers me to be honest ! But yea, clearly

[@PanfuSerenity]

I was reninded of Wallmonger too, but some of the attacks (especially the middle beam) are more Throne from Nuclear Throne.

[@GalactaKiller]

@@PanfuSerenity Never played Nuclear Throne, so the only references I have is from EtG ^^"

[@paldoom8833]

15:53 This is what double trouble should be in the game!!!!! Crazy cool >:)

[@annaritaprete6091]

Two things: The bosses having custom entrace sounds (like Sparky laughing and Dust Devil having wind is awesome) The sheer concept of THE WALL BEING A BOSS is so cool.

[@lordpumpkinhead265]

Mournmurus' concept is actually from a game called Enter the Gungeon! It's another roguelike similar to Isaac, but with a lot more emphasis on bullet hell. Check it out sometime!

[@Cole_Is_A_Mole]

2:18 Bart really said "7 •"

[@theolabroers9614]

14:44 We got PLANTERA boys

[@mje71103]

That's cute, Mirage's other face looks like Spoiled Rotten from Wario Land 4 and samples sound clips from the Slammer ghosts from Luigi's Mansion: Dark Moon. Mournmurus is also so cool, love the idea of a classic "Demon Wall" boss in Isaac.

[@ordinaryman00]

Finally. Bosses that aren't broken af

[@thatrandomrecorder914]

Really wish there was a special interaction where if you let Tarbacadabra show their magic tricks without hurting them, they would leave with a bow.

[@Isiel42]

Missed opportunity to have a snippet of "Scatman's World" play every time Scat Man attacks.

[@plaguenplay3516]

copyright issues, prolly

[@mirmordan7317]

Four souls, ETG and Terraria references? I love this.

[@whynotanyting]

I like the use of the bent spoon to signify that the projectiles will be homing. Really nice telegraphing here even if you haven't seen this boss before.

[@an_annoying_cat]

i love how they took a teased mewgenics boss and adapted it into isaac before mewgenics is even out

[@ВсеволодМихеев-п6ж]

I like, when community members cooperate with each other, like Electric Mozzie there or their own versions of tarnished character, or some cool synergies with items from other mods, that really encourages.

[@jeremypanjaitan4039]

they added my boy wall of flesh into isaac im so proud of him😢😢

[@TheFighterlucario]

Let's just call it a love letter to all our favourite walls =)

[@JayconianArts]

Yum yum😮

[@draw2death421]

Thats wallmonger from enter the gungeon tho Tullip is clearly refrence to Planters so we got our refrence lol.

[@jamesfountain-e8m]

@@draw2death421 its plantera but she got corrupted buy the crimson

[@IKEACherryChair]

God these are so cool! The amount of love and attention each of these guys got is incredible , not to mention the difficulty seems in line with the stage, which is more than can be said for some official bosses *ahem* CLUTCH.

[@rektbiich4585]

No one talks about HOW FREAKING AMAZING AND NEW THE MOURNMURUS FIGHT WAS !!!! 10/10 , Its just such a unique way of fighting ! Also Papa plum and Baby plum moment was cute and made sense, if you spare baby plum he comes to aid you when you need him, and if you ask him for help for ,well.... his father , afc he will turn on you :D they gotta give a better secret synergy - pacifist 30 seconds when both are on board, and both realize you arent there to harm them ,so they fly away and leave a super plum item, that summons them both and deals heavy dmg!

[@Glubnub]

I feel like since papa plum is trying to avenge baby plum, using the whistle would spare him, since you get the whistle from sparing baby plum.

[@blackakbar]

this boss is actually from enter the gungeon "wallmonger", take a look at him, u will see the identity. Nothing bad about it tho, tboi and etg are goated.

[@afunnylittlegoober]

​@user-fe1gz3de2f it even had the jammed shots

[@sergimeli4194]

​@@blackakbar ETG ❤️

[@LordRemiem]

I really love the creativity in those, especially how Mirage literally SEPARATES from its own reflection if you use the cleaver against it

[@fruity-plum-guy]

MOZZIE USES RAYMAN SOUND EFFECTS 🔥🔥🔥

[@Da_ComputerMonster]

Fruity Plum *GO!*

[@julieradcliffe9486]

FINALLY SOMEONE KNOW IT! THE MOSQUITO STAGES!

[@beefchopstick]

Delirium: "I will kill you" Fruity Plum:

[@HerreZC]

0:56 Eatin Rats!

[@snakebird9048]

AHH rats!!!!!

[@FunniBSSFan]

OHHHH SHIT, A RAT!!

[@lordpumpkinhead265]

@@FunniBSSFan GONNA WHOOP YO ASS!

[@snakebird9048]

@@FunniBSSFan is it gay

[@deadlydingus1138]

Rrrrrratto

[@genericname108]

13:02 Wallmonger moment 😳😮 Epic Gungeon reference

[@MegabombGamer-rb5kh]

Mournmulus references Wallmonger, a boss from Enter the Gungeon. Not the first Gungeon reference, as Siren has some similar attacks to the Gorgun, also from Gungeon. Fittingly, both appear on Alt Floor 3.

[@ChaseVaccaro-ge3gk]

Won't lie, I was about to ask if Gungeon also had alt floors, then I remembered that Mausoleum and Gehenna are on the same chapter.

[@SillyGooberQ4]

Tulip gives crazy plantera vibes and im so here for it

[@FunniBSSFan]

I certainly love Tulip's Body horror design, she looks great with that!!!

[@Last_Person]

Shoutout to the reference to hit four souls card, the duke of flies (but actually it’s the bloat)!

[@plaguenplay3516]

18:20 why is this hole looking like this😭

[@Judas-xp2fl]

I love bestiary's description it adds so much personality to the enemys ! (I found a Scratch game a few month ago with the Scatman boss so I think it was a prototype. It has change a lot)

[@pastagod2219]

I like the thumbnail on the workshop page having the bosses posed like the bosses on the boss butch screen in Kirby's Dreamland 3

[@thedeppressedone9236]

18:45 Ah, Rayman Origins, truly a gem.

[@julieradcliffe9486]

Hell yeah. Also shows up in rayman legends, thanks to back to origins.

[@ribc4ges]

personally i'm a really big fan of Sparky :) i love the lil laughter he does

[@ultima9543]

It would be cool if Mozzie had interactions with a blood donation machine that we can create using a temperance card

[@mrkeyboardmashed]

the secret interactions give this so much more quality

[@skaithespirit1184]

Since there's some noticeably empty slots in the bestiary, does that imply there eventually might be more bosses added to the mod? If so I am 100% looking forward to whatever this mod's devs cook up next, because these 13 weirdos ROCK!

[@Yoshikage_Kira5]

14:33 we got Plantera in tboi before gta6

[@theforgotensoul]

tulip and mournmurus: we are so original. plantera and wall of flesh: are we a joke to you?

[@jonasweijer9213]

These bosses are fantastic! Their animations give them all so much personality, and they seem to be challenging but not impossible to dodge. My favorite part is Tarbacadabra using the sound effect of a stylish move in paper Mario

[@ThatRandomGuyYoutube]

I love how Mozzie uses Bzzit's sounds from Rayman origins. So nostalgic

[@BasementDweller_]

Yo! 15:50 It’s a Four Souls reference! It’s that one promo boss card called “The Duke of Flies but actually it’s The Bloat”. Groovy reference.

[@Godifierr]

these are actually insane! Very good work from all the developers :D

[@Vivi-i3i]

i find it so charming that mirage, a boss that's a ghost, has a fun play on something the organisation from fiend folio does, where they use voice FX from luigi's mansion 1, mirage uses FX from 2! (quick edit to correct this actually, the toothy one uses FX from 2, i seem to remember the other guy's FX from 1. still either way it's cool that the use of luigi's mansion voice stuff has become a trend with ghost bosses)

[@ghifariasoka8272]

Since no one has done it 0:56 Radical Rat 1:49 Radical Rat Bestiary page 1:53 Bart 3:05 Bart Flush! Interaction 3:18 Bart Bestiary page 3:22 Sparky 4:48 Sparky Bestiary page 4:51 Scatman 6:14 Scatman Flush! Interaction 6:24 Scatman Bestiary page 6:38 Mirage 7:25 Mirror Mirage 8:08 Mirage Bestiary page 8:12 Dust Devil 9:23 Dust Devil Bestiary page 9:27 Papa Plum 10:28 Plum Flute Interaction 10:48 Reinforced Plum Flute 11:13 Papa Plum Bestiary page 11:17 Tarbracadabra 12:40 Tarbracadabra Bestiary page 12:46 Mournmurus 14:16 Dad's Key Interaction 14:30 Mournmurus Bestiary page 14:35 Tulip 15:43 Tulip Bestiary page 15:48 Duke of Flies..? 15:56 Duke Bloat 17:04 Duke Bloat Bestiary page 17:08 Brainrot 18:41 Brainrot Bestiary page 18:47 Mozzie 20:02 Mozzie Bestiary page 20:08 Spit Mozzie 21:11 Inky Mozzie 21:51 Volt Mozzie (Fiend Folio)

[@vahareklama892]

8:13 I sneezed on this moment

[@specterx2135]

@schizopenguinLMFAOOOOOOOOO 💀

[@TRV140E-chaine_perso]

bruh i was looking at isaac at the start of the video and he was drawing a heart

[@lemin1]

Fun fact: the duke bloat is based of the four souls card "The duke of flies but really its the bloat"

[@AVerySealishSeal]

i'm pretty sure mournmurus is a reference to the wallmonger, from enter the gunegon!

[@CyberweaverVT]

Hi SlayXc2! Godmode was finally updated for Repentance! It’s called The Ascent of Isaac: Godmode Achieved

[@TG-gb3ui]

Where can I download this?

[@jpxboxdstation]

This is really great, I would love that something happens when you use a high priestess cars on the "Bart" boss while he's in flaming bag mode

[@LuccaAbielPolliniMello]

Tulip gave me some plantera vibes

[@vibreart.mp3]

The Mirage looks like it came straight out of Wario Land 4. Specifically reminds me of Spoiled Rotten (aka the tutorial boss)

[@_TeaForTwo]

18:56 I wasn't expecting a sound effect from Rayman Origins

[@loganhart4]

I really love his voice, its exstreamly relaxing and helps me sleep, witch is very special as i struggle to sleep

[@RemolachaHervida]

That Mournmurus reminds me a lot of Wallmonger, from Enter the Gungeon

[@el-yerba-buena9678]

Mourmurus being an almost exact boss fight to the Wall in Gungeon is so cool. Anyway, I somewhat expected the '''murus'' in its name to mean "wall" (sounds similar to wall in spanish "muro") and that is extra cool.

[@enoraltheoutcast]

I LOVE these bosses. Mournmurus is basically the Wallmonger from ETG, but AH i love the execution here.

[@usernametaken4023]

This mod blends in so well with the base game, too. With the exception of one or two bosses I think a lot of these could be mistaken for actual base game bosses!

[@Jay_A_Comenter]

Good job to the team who made these, they’re very well done

[@mikethegoo]

Okay but even the NAME Scatman feels so Isaac. Because it's a pun, a variation AND a reference!

[@zoeneden5781]

My fav is radical rat i love funny rodents

[@okimiro446]

yoo two videos in less than a week wuts happenin to this channel, keep on man 👍🏾

[@laythontucker7978]

The Duke Bloat should have been called “The Duke of Eyes”

[@cristianciaravolo5287]

What abaut if you use the caos card against the duke of flies before the bloat spawn?

[@chubletfletcher1462]

I was NOT ready for the difficulty spike of mournmurus

[@hibbdibb7519]

Duke bloat be like eggman fr

[@nabilelmehy6245]

the scat man boss piss attack is so funny to me

[@Inkyrealm77]

THEY ADDED DUKE OF FLIES BUT ITS REALLY THE BLOAT FROM TBOI FOUR SOULS?! OMG IM IN LOVE

[@Meatjar20769]

i was wondering why Mozzie's sounds were so familiar until i realised they were probably the mosquito's hitsounds from rayman origins

[@Nerscy]

Big w ETG reference with the wall boss, crazy fight

[@DragstsHoard]

Never thought i'd see a Wallmonger in Isaac, love this community!

[@Glubnub]

It’s also probably a reference to the door boss in gungeon too

[@DragstsHoard]

@@Glubnub yeah, the Wallmonger, thats its name

[@Glubnub]

@@DragstsHoard no there’s a different one called the door lord that just is the boss gate

[@DragstsHoard]

@@Glubnub my bad i thougth you said wall boss yeah it could be with the door lord in a way

[@Glubnub]

@@DragstsHoard I think it’s a reference to both

[@ctf_2fort152]

Mournmurus is definitely based on Wallmonger from Gungeon, which is really cool, especially if you consider the technical skill required to mod that kind of room in TBoI

[@spydersoda]

they could do something really cool with mozzie's health stealing mechanic. like maybe after a certain number of times it gets too bloated and explodes and gives a special item

[@superleoxxl.r.s.5437]

Bro tulip is tboi plantera 😂, so cool

[@rfurthegamer3412]

It uses a lot of iconic sound effects, like the paper Mario stylish move sound effects

[@henrygigstead4827]

It just occurred to me that Mournmurus is like Wallmonger from Enter The Gungeon

[@henrygigstead4827]

Also Mirage reminds me of Spoiled Rotten from Wario Land 4 (with the cute appearance but then becomes nightmare fuel) and Tulip being Plantera from Terraria

[@henrygigstead4827]

Actually there’s probably more references. Radical Rat being Mouser from Mario Bros 2 and Mozzie being Mosquito from Rayman

[@mikethegoo]

Evil Mirage reminds me of the red ghosts from Luigi's Mansion 2, especially his noises!

[@Matheus-gc5fn]

I am happy i live in brazil and so have very little chance of suffering "the prank that inspired bart"™

[@Fidentt]

I expected a dead sound from brainrot to be like "what the sigma" "skibidi rizz" or something like that, lol

[@ParkerGaming7]

I like how they turned the boss door in to a boss

[@ErisEntropy]

This dev is so talented. They should hire them to revamp Delirium.

[@TheActualMrLink]

Tulip looks like something right out of Fear and Hunger!

[@Buzzblade146]

They really got Issac fighting the walls now 10/10

[@S_yIvie]

Mirage sounds like a Luigis Mansion enemie

[@kregheckel3628]

Fun fact, the name and thumbnail of the mod is a direct reference to Kirby's Dream Land 3, of the mode of the exact same name!