Or Jorji as I like to call him for short.
Jörmungandr is from Norse mythology, the middle child of Loki and giantess Angrboða. Jörmungandr is said to be a sea serpent who was tossed into the ocean that surrounded Midgard (our world) by Odin. Mythology says that the serpent grew so large he could surround the earth and grasp his own tail, becoming known as the Midgard Serpent or World Serpent. Legend says when he lets go of his tail the world will end.
At Ragnarok Jörmungandr.is said to have his last meeting with his enemy Thor. He'll come out of the ocean, poisoning the sky but will be killed by Thor who, in turn, will die after being poisoned by the serpent's venom.
Maybe Jorji could be your next WiP antagonist. :)