Agent Venom Team up
Agent Venom is coming to Marvel Heroes and while you can't actually play as him, you can have him join your hero as a team up character. Currently, Carnage is the only other team up symbiote available. Venom is a playable character with Toxin and Anti-Venom available as alternate costumes. Check out the test video below:
Will you be purchasing Agent Venom?
[Thanks to @OrionStarb0y for the tip]