How to make a spider like avatar in VRChat (Automated!)

In this video I go over how to create a spider-like avatar in VRChat using Final IK. Most of the Unity work is automatically done via an editor script that is provided further down in the description. If you run into any problems during the process, feel free to join the discord and ask for help!
Time Stamps:
0:00 Introduction
0:47 Blender Start
1:19 Creation of VRIK Hips
2:38 Export FBX
2:46 Unity Start
2:58 Spider IK Script Start
4:41 Run the Script
5:34 Explanation of FIK
7:05 First Test
7:24 Possible Adjustments
9:52 VRChat Slowdown Glitch
10:24 Conclusion
Link to the automation script I am using:
github.com/Scionzenos/spiderIK
Final IK 45-90$ depending on sale:
assetstore.unity.com/packages...
Discord:
/ discord
Patreon:
/ scionzenos
Ko-fi:
ko-fi.com/scionzenos
Twitter:
/ scionzenos
#VRChat #FinalIK #Unity #Spider #Arachnid #RootMotion

[@cornobjects1173]

As someone who made a couple of avatars using the old manual method, complete with having to reimport the whole model and do humanoid + SIK setup all over again from scratch every single time something refused to work, I can't begin to tell you how glad I am that this automated update came out. Thanks for making both the original method and this new, improved version.

[@abuh3232]

I am a big fan of your work, Scion Zeno. Thank you. With this, I am able to create my 30 legged centaur crossbreed kitsune character. Very nice. Subscribed.

[@mja00]

Wait, someone else made a 30 legged centaur crossbreed kitsune character? Wanna meet up in VRC?

[@Sincerely_V_]

This is EXACTLY what I needed!

[@Yipper64]

Finally! Ive been wanting to make Arcanine from pokemon playable, in a sort of centaur-like way, so this should do it!

[@TheSakemeRoze]

thank you!

[@JulesJuno737]

Thank you!!

[@alwaysyouramanda]

How cool!!!!!

[@bigbunnyleabee]

could i use this script for a centaur or will it be funky

[@pinawita]

will this work for a non spider model? wanting to make a four legged dragon but can't find an easy tutorial like this lol

[@Scionzenos]

This system works for any model with any number of legs. Just make sure the legs have a decent amount of bend to them in rest pose.

[@iTzNikkitty]

So, I have a cecaelian character who has eight tentacles instead of legs. I'm thinking that if I were to bring her into VRChat, I would use this sort of system to make it work. However, I'd also like to be able to make certain animations with the tentacles where they can be given arm-like poses. Would that be possible with this system in use?

[@Scionzenos]

Yes, though its more complicated than it may seem. The legs cannot be animated when they are under the influence of VRIK, but you cannot easily disable the VRIK to give you access to them. The solution that I did in the past to do something similar is to have the legs follow invisible VRIK legs when you want it to walk, then lower the weight to those invisible legs (or disable the constraint in another way) and then animate them then.

[@iTzNikkitty]

@@Scionzenos Ah, that's a clever workaround. A bit like what I did to be able to make my arms scale up while still being able to control them.

[@ItsPomni]

Everytime i search vrchat avatar with spider body's and spiderman always show up bruh.

[@cyanember6767]

is there an alternative to Final IK since i think it doesn't work for quest users? I wanna make my avatar be able to have animations like those for quest and pc if possible, either that or i'm gonna have to try and make a custom walk animation for quest users-

[@Scionzenos]

Final IK and constraints were banned on Quest, you would need to manually animate a walking animation for quest users.

[@legostudios120]

Is this process compatible with avatars that are meant to be used on quest or PC only?

[@Scionzenos]

VRChat recently banned usage of Final IK on Quest, so this process is purely PC only.

[@dannystephs9600]

do you have a way of showing how to make a spider like model in blender so that we have an actual model

[@Scionzenos]

There are a ton of blender tutorials if you want to make something for yourself, or you could download models that have already been made; from games or otherwise on websites like Sketchfab.

[@drkreuzer670]

The tools bar doesn't show up when i import the UnityPackage

[@Scionzenos]

Any console errors may prevent the script from initializing, even if the errors come from unrelated scripts.

[@BraggsTippingPoint]

Does this script work for just regular spiders and not VRChat avatars?

[@Scionzenos]

There are a couple things that I am doing in the video that are really only needed if you want to use it in VRC. However, the concept will still work outside of VRC as Final IK is a generic Unity plugin. Following the tutorial 100% will leave you with something that will walk like a spider, regardless if you plan to upload it into VRC or not.

[@HowJunior]

I noticed they updated it to where It says "spider hips parent" and "constraint target." Now I'm not sure where to put what.

[@Scionzenos]

"Constraint Target" is just "Constrain To What" renamed. I didn't like my original name. "Spider hips parent" is an optional slot that lets you specify which bone the spider hips are children of. In the video it would work if I just didn't put anything in that slot, but it lets you have spider legs attached to something like your spine/hands instead of the humanoid hips. Good luck with your model!

[@murdoc53]

Does this script still work for the current updates in unity and vrc?

[@Scionzenos]

Yes, if it breaks in the future I will update the video to show it.

[@murdoc53]

@@Scionzenos the avatar I am working on is more of an octopuss design. The limbs have 7 bones each. Im guessing its impossible to use that many given the current set up

[@Scionzenos]

@@murdoc53 You would need to simplify the legs to 4, or have invisible legs with 4 bones each and use those are guides for your 7 bone legs. You can then use CCDIK or FABRIK on the 7 bone legs and target the foot of the 4 bone legs that are using VRIK.

[@murdoc53]

@@Scionzenos went with the advice and reduced it to 4 each. trying to maintain a medium rating for performance and have capped the total bones to 150 and polygons to 15,000. the weight-painting was a total pain to making the legs look flexible and noodle like and not rigid.

[@murdoc53]

@@Scionzenos ran into a problem where the legs do not respond when crouching or going prone

[@LizzieGoldenMH]

the only problem i have is i'm too poor to buy final ik

[@Scionzenos]

You can use the Final Ik stub as a free alternative! It won't work inside of the editor, but will function once in game, so testing will be slower. The automation script works fine with it. github.com/VRLabs/Final-IK-Stub

[@LizzieGoldenMH]

@@Scionzenos thx

[@LizzieGoldenMH]

@@Scionzenos so where do i put file inside

[@Scionzenos]

@@LizzieGoldenMH Installing the FIK stub unity package will put it where it needs to go

[@BC-pn2ed]

lord help me, imma try

[@carl4159]

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