In Venom (2011)’s “Circle of Four” story arc, Red Hulk, Agent Venom, X-23, and Alejandra Jones’s Ghost Rider have teamed up to put down Blackheart and stop his hellish invasion of Earth.

Thaddeus "Thunderbolt" Ross is marked as a war criminal by Doctor Doom in Red Hulk #6's One World Under Doom tie-in.

Echo as a Venom host would be powerful, but the transformation itself is undeniably haunting. Believe it or not, Red Hulk has been a member of the Avengers before, and he's also become a host to ...