My suggestion, Provide his some more materials for more acceptable role models. Superman cape, Captain America shield or something like that. Try to pique his interest in those directions. Well it’s batman a guy dressed in a bat suit who sits among the gods who fight alongside gods and powerful beings despite being completely handicapped having no superpowers just with his sheer will but still he is brains behind justice league without him justice league would have lost many fights and batman is also the leader of justice league a mortal being who leads the gods.
Here batman designed a suit to counter every member of justice league the suit is called justice buster cool name nah the suit can go toe to toe with every member and in this issue he defeated the whole justice league who were in mind controlled by joker. Hmm, interesting question. Let us do a small thought experiment – if his arm cuts off, will he grow another arm, or will he grow another body? It is obvious, right? If you cut him horizontally in half, his upper body will grow new legs, because, well, that’s how regeneration in lizards works too. They grow limbs.