Jack-Jack's powers. I count four.
1) Flame On!
2) Turn into lead or some other really heavy metal
3) Vibrate
4) Morph into a demon and kick ass
Rather than figure these for some all-encompassing power, I believe that the creators were piling a ridiculous number of separate powers into him. Y'know, irony. He is supposed to be the normal one, but then he is the powery-est one of them all. He is certainly surpassing a "balanced" number of powers but they are also thematically unrelated. They are just kind of random and extreme. Just curious if there are any obvious references there, given my relatively specific comic book experience, I call on the greater knowledge of the community at large.
1) Human Torch, pretty obvious.
2) I don't know, who turns into metal? I saw a post somewhere that proposed Colossus, but Jack-Jack looked less armored and more like solid metal to me.
3) Speedsters can usually vibrate, but anyone know of a specific vibrate-y hero?
4) I'm thinking Hellboy as a baby.