Avengers Assemble TV Series

When Red Skull is dying due to his imperfect Super Soldier Serum, he teams up with MODOK who upgrades HYDRA's tech from A.I.M. to kidnap Captain America. Red Skull wants MODOK to help him transfer his mind to Captain America's body. After his defeat by a reassembled team of Avengers, Red Skull takes Iron Man's armor for its life support system. This leaves Tony for dead.[6] The Avengers get Stark a new Iron Man armor. Red Skull attacks them at their mansion. Red Skull is once again defeated. The Avengers Mansion is destroyed during the fight. Red Skull plans to take away everything the Avengers hold dear from their lives to their country by trying to have them hated by the people for failing to save the day.

To even the playing field, Red Skull brings together his team of power giants called the Cabal. Red Skull's invitational transmissions are shown to have been received by Attuma, Doctor Doom, and Dracula even though only Attuma and Dracula accept the invitation. The Avengers and S.H.I.E.L.D. intercept the transmission. The Avengers remain together to battle the Cabal. To stay close to each other after Avengers Mansion blew up, they set up their base in Avengers Tower. The Cabal later on adds Justin Hammer's robot creation Super-Adaptoid and Hyperion to their team. With the threat of the Cabal, the Avengers fight them at every end as well as other threats that come to Earth.