- Super Hero Squad
- Red Skull (Johann Shmidt) (First appearance)
- Lethal Legion
- Arnim Zola (Only in flashback)
- Howling Commandos (Only in flashback)
- Cyttorak (Mentioned)
Races and Species:
- Doctor Doom's Armor
- Captain America's Shield
- Iron Man Armor
- Falcon's Wings
- Silver Surfer's Surfboard
- Irradiated Fossil
- Arnim Zola's Robotic Body
It's Captain America's birthday and all he wants to do is celebrate it with his fellow Super Hero Squad members and Nick Fury. In order to show his minions what real villainy is like, Doctor Doom thaws out the WWII villain Red Skull. Captain America is not pleased to find his old enemy up to his old tricks while Doctor Doom is not thrilled about Red Skull's enormous ego. Villains: Doctor Doom and Red Skull.
- Hulk's Transformation: M.O.D.O.H. (Mental Organism Designed Only for Hulking).
- Title card's issue homage Captain America #100.