Leviathan

Leviathan is a villan with the power to change any (or all) parts of his body to any sea creature (real or mythical) that he can think of.
==Early childhood==
Thomas Gibbs was just an ordinary boy. He lived with his father by the sea learning nothing but to fish and the way of the sea.
==The Storm==
On tom's 18th birthday, a perticularly rough night out at sea, tommy and his father were attempting to find their way home when an extremely large wave washed over their boat, and he heard his father scream.
Tom, without thinking, dove in to save his father. as he brought his head out of the water, he realized that he couldn't see his father anymore. Or the boat! desperate, tom made a silent prayer.
another wave came and, before he knew it, Tom was under again. but this time, he couldn't swim back up. he closed his eyes and waited for the end. but it didn't come...
Tom opened his eyes. he was still under water, but he could breathe. "you're only alive because of me, you know." a strange voice inside his head said. "I could let you die... or we could make a deal. you shall be my warrior. my human embodiment. you shall do my bidding, and my bidding alone, and shall serve me as...... THE LEVIATHAN!" Thomas felt a surge of energy jolt through him. he felt like he could swim to the bottom of the ocean and back without breaking a sweat. "I accept" he somehow said underwater.
Tom woke in his bed. he checked the clock. it was morning. he didn't know how he had gotten there, but he knew the last night hadn't been a dream. he knew what he had to do for the rest of his life. he was a servant. whether that meant he would be doing evil deeds for the rest of his life, or simply living normally and waiting for the call of his mysterious new master, he had no choice. he was now the leviathan.
==Powers==
Leviathan can change any or all parts of his body into real or mythical sea creatures. he is not limited to one creature at a time, but the more he uses, the more strain is put on his body and the more tired he is afterwards.
==Weaknesses==
Tom always has his masters voice in his head and this has driven him quite insane. this can be used as an advantage to those smart enough to use it.
also, while Tom is not limited to transforming into one creature at a time, it drains his energy more the more he uses.