Injustice 2 - Single fight gameplay - Red Hood

i recently obtained one of the many DLC characters
i purchased "fighter pack 1" which includes red hood, starfire and sub-zero, but i only got red hood
im guessing i won't get starfire and sub-zero until they're available individually in the store like red hood was
and of course, i'll be thrilled to see who the rest of the DLC characters are