Amalgamation of the Challengers of the Unknown and the Fantastic Four.
Amalgams include:
Sue "Ace" Storm: Sue Storm/Ace Morgan
Reed "Prof" Richards: Reed Richards/Prof Haley
Johnny "Red" Storm: Johnny Storm/Red Ryan
Ben "Rocky" Grimm: Ben Grimm/Rocky Davis
Doctor Doomsday: Doctor Doom/Doomsday
Vykin the Black Bolt: Black Bolt/Vykin
Dream Crystal: Crystal/Beautiful Dreamer
Medusa Moonrider: Medusa/Mark Moonrider
Uatu, the Guardian: Uatu, the Watcher/Guardians of the Universe
Multi-Masters: Puppetmaster/Multi-Man
June Masters: Alicia Masters/June Robbins
Silver Racer: Silver Surfer/Black Racer
Galactiac: Galactus/Brainiac
Bronze Tiger: Black Panther/Bronze Tiger
Triserinak: Triton/Karnak/Serifan
Wyatt Flying Stag: Wyatt Wingfoot/Super Chief
Big Gorgon: Gorgon/Big Bear