Appearing in "Into the Negative Zone"
- Negative Zone guards
- The Leader (Samuel Sterns)
- Annihilus (Revealed to be alive)
- Sauron (Karl Lykos) (Appears on a computer screen, TV, or hologram only)
- Ymir (Appears on a computer screen, TV, or hologram only)
- Giant three-headed snake
- Fantastic Four (Mentioned)
- Mr. Fantastic (Reed Richards) (Mentioned)
- Negative Zone monsters
- United States of America
- Negative Zone
Synopsis for "Into the Negative Zone"
Blastaar attacks Hoover Dam and fights the Agents of S.M.A.S.H. where he has special Negative Zone snakes to inject their venom which causes them to be petrified. Hulk travel to the Baxter Building in New York to use the Fantastic Four's Negative Zone portal. When Hulk and Thing enter the Negative Zone, Hulk and Thing end up fighting Blastaar at Leader's lair. Annihilus is seen with the Leader where it was shown that Leader had confiscated Annihilus' Cosmic Control Rod and modified it. Blastaar was defeated by Thing while the Hulk battled the Leader. After Leader was defeated by Hulk, Annihilus reclaimed the Cosmic Control Rod and escaped.