2001 Team Debuts

• 
  Action Force (Earth-616)
• 
  Alpha Flight (Earth-901237)
• 
  Avengers (Earth-1081)
• 
  Avengers (Earth-1298)
• 
  Avengers (Earth-1556)
• 
  Avengers (Earth-2182)
• 
  Avengers (Earth-45017)
• 
  Avenging Host (Earth-9997)

• 
  Black Vinyls (Earth-616)
• 
  Brotherhood (Earth-616)
• 
  Brotherhood of Evil Mutants (Earth-12)
• 
  Brotherhood of Mutant Supremacy (Earth-1610)

• 
  Challengers of Doom (Earth-111)
• 
  Cloak and Dagger (Earth-1298)

• 
  Dark Sisterhood (Earth-616)
• 
  Deep Six (Attuma) (Earth-616)

• 
  Enforcers (Earth-1610)
• 
  Exiles (Multiverse)

• 
  Fantastic Four (Earth-1112)
• Fantastic Four (Earth-1556)
• 
  Fantastic Four (Earth-45017)
• 
  Fantastic Four (Earth-9921)
• 
  Five for the Future (Earth-11113)

• 
  Gang of Four (Earth-616)
• 
  Guardians of the Galaxy (Earth-9997)
• 
  Guardsmen (Earth-9997)

• 
  Heralds (Earth-9997)

• 
  Imperial Guard (Earth-8649)

• 
  Kree Bloodhounds (Earth-616)

• 
  Ladykillers (Earth-616)
• 
  Law Enforcement Squad (Earth-22519)
• 
  Lethal Legion (Earth-1298)

• 
  Masterpiece Theatre (Earth-7642)
• 
  Mercy Sisters (Earth-616)
• 
  Monster Generation (Earth-9997)
• 
  Moon Clan (Earth-9997)
• 
  Morlocks (London) (Earth-616)

• 
  N-Explorers (Earth-616)
• 
  New Mutants (Earth-1081)
• 
  New York Mets (Earth-616)
• 
  Night People (Earth-9997)

• People's Protectorate (Earth-253)
• 
  Promise (Earth-616)

• 
  Redeemers (Earth-616)

• 
  Squadron Supreme (Earth-1121)
• 
  Stepford Cuckoos (Earth-616)

• 
  Teenage Mutant Nympho Teachers (Earth-7642)

• 
  U-Men (Earth-616)
• 
  US War Machine (Earth-112001)

• 
  Veronica Crime Family (Earth-7642)
• 
  Vigilante Squad (Earth-616)

• 
  Warriors Three (Earth-1298)
• 
  Weapon X (Multiverse)

• 
  X-Men (Earth-1081)
• 
  X-Men (Earth-12)
• 
  X-Men (Earth-1610)
• 
  X-Men (Earth-1815)
• 
  X-Men (Earth-8649)
• 
  X-Men (Earth-9921)
• 
  X-Statix (Earth-616)
• 
  X-Treme X-Men (Earth-616)