Symbiote Saga
Episode 7 is the introduction of "Anti-Venom" to the Ultimate Spider-Man series.
Episodes 12 - 14 is a three part arc titled "Symbiote Saga"
It features Agent Venom, Anti-Venom, and Carnage and borrows elements from Venom Bomb, Maximum Carnage, and Spider-Island.
I highly recommend it!
