Alias: Sparky
Powers: Jaws of steel, multidimensional teleportation
First appeared: 1965, in The Fantastic Four No. 45
Bio: Lockjaw's name is no coincidence; christened "the mightiest clamp on earth," his powerful mouth grabs hold of his foes and doesn't let go. That, along with his other power — transporting himself and others across great distances, even between dimensions — makes him an important member of the Inhuman race. But what is Lockjaw, exactly? It's unclear if he was born a giant bulldog or is a former human mutated into canine form (he does talk, after all). Regardless, one fan site calls Lockjaw the most powerful inhabitant of the Marvel universe, as he's not restrained by the flaws and vices of other characters: "He has no real enemies, he is free to come and go as he pleases and do whatever he wants. And he enjoys life!"