So Jim found Drake as a bitty, but in this verse, they're their usual selves, but they can still fly like the real life counterparts. Only Drake's wings were cruelly clipped off when he was young, so he didn't have arms either.Despite Jim taking him in, people were criticizing Drake about being unable to do any heroics because of his disability, making him feel bad. Jim doesn't want any of that garbage tho, so he becomes Papa Wolf about it. And Drake works hard, having his hero believe in him.