Perrysburg

Character name is... Perrysburg

Perrysburg is a sea dragon/Leviathan that saved a bunch of the cast from a submarine that was rigged to explode.

Background
There's not a lot known about his past. We don't even know where he was born or when he was born. But for the sake of having an idea of where he was born, let's just say he was born in Lake Michigan.

Behind the Scenes

 * His first appearance was in the four parter "Submarine Sea Shanties".
 * It seems he appears anywhere he wants to. Like in "Cabin Fever".
 * He is aware of the show
 * He knows about 4546B