Hi, I haven't seen your other posts so I don't know if you have already done this, but have you thought of making a few posts about what are the super villains Bat-manta is fighting against?
If wanting to stay easily on animal level, the Penguin should not be an issue at least, or clown fish as Joker.
wow..nice idea @brot ..never think of that...really gonna make the world more fun!!..thanks again..hope you can share if you got any idea ..