Deep Six: When Namor the Sub-Mariner was missing and framed for crimes in the surface world, several of his Atlantean allies set out to find him together. The impromptu group consisted of Stingray, Andromeda, Tiger Shark, Tamara Rahn, and Triton. They battled against the Avengers and then broke up shortly thereafter. Alternatively, Attuma's Deep Six appeared in Defenders v2 #7 (September, 2001). Membership of the group included Attuma, Nagala, Orka, Piranha, Sea Urchin, and Tiger Shark (now a villain again).
Defenders
Delta Network
Demi-Men
Demons
Desert Stars
Department H
Department K
Desert Sword
Deviants
Diabolical Duo
Doctor Doom's Generals
Dominus' Minions
D.P.7 (Displaced Paranormals Seven)
Dragon Circle (see Defenders)
E
Earth Force
Elders of the Universe
Elementals
Elements of Doom
Emissaries of Evil
The Enchanters Three
Enclave
Enforcers
Eternals
Euroforce
Euro-Trash
The Evil Enforcers (see Enforcers)
Excalibur
Excelsior (see Loners)
Exemplars
Exiles
Exiles (Ultraverse)
Exiles (Red Skull allies)
Externals
F
Factor Three
Fallen Angels
Fantastic Five
Fantastic Force
Fantastic Four
Fantastic Four Incorporated
Ultimate Fantastic Four
Fathom Five
FBI
Fear Lords
Fearsome Foursome
Femizons
Femme Fatales
Fenris
The FIRM
First Line, Seen in Marvel: The Lost Generation
The Flight
Folding Circle
Followers of the Light
The Fomor
Force Four
Force of Nature
Force Works
Forgotten
Four Horsemen of Apocalypse
Freedom's Brigade
Freedom's Five - World War I team featuring Union Jack, Phantom Eagle, Sir Steel, Silver Squire and Crimson Cavalier
Freedom Force
Freex (Ultraverse)
Friends of Humanity
Frightful Four
Front Line - Essentially a retcon to fill the gaps caused by Marvel's "sliding timescale", in which the emergence of major superheroes and events was only supposed to have occurred "about ten or fifteen years ago" at any given time, this team first appeared in March 2000, and the 12-issue series told of a supposedly decades-long existence with a huge number of (mostly undocumented) behind-the-scenes adventures.
Future Foundation
G
Galactic Guardians
Gamma Corps
Gamma Flight
The Garrison
The Gatherers
Gene Nation
Generation X
Genetix (Marvel UK)
Giants
Gods
Godzilla Squad
Goodman, Lieber, Kurtzberg & Holliway
Grapplers
Great Beasts
Great Lakes Avengers
Green Cross
Guardians of the Galaxy (1969 team)
Guardians of the Galaxy (2008 team)
Guardsmen
Gunhawks
H
H.A.M.M.E.R.
Hammer and Anvil
The Hand
Harriers
H.A.T.E.
Hawkeye & Mockingbird
Headmen
Heavy Hitters
Heavy Mettle
Heliopolitans
Hell's Belles
Hellfire Club
The Hellbent
Hellions
Heralds of Galactus
Heroes for Hire
Horsemen of Apocalypse
Hounds
Howling Commandos (Nick Fury)
Howling Commandos (Sgt. Fury)
Hulkbusters
Humanity's Last Stand
HYDRA
Hydro-Men - These characters, created by Bill Everett, Steve Gerber and Win Mortimer first appeared in Sub-Mariner #61 (May, 1973). The Hydro-Men is an organization led by fanatical scientist Herman Frayne who used mutagenic Terrigen Mist to transform himself into a green, scaly-skinned humanoid. He took the name of Doctor Hydro. He also transformed his hired agents into Hydro-Men as well.
Hyperkind (Razorline)
I
Illuminati
Imperfects (Marvel-EA)
Imperial Guard
Infinity Watch
Infra-Worlders
Inhumans
The Initiative
Insidious Six
Institute of Evil
Intelligencia
The Intruders
Invaders
J
Jade Syndicate (Activision)
Jury
K
Kid Commandos
Killraven's Freemen
Knights of Pendragon
Knights of Wundagore
Kree Sentries
L
Lady Liberators
Landau, Luckman, and Lake
Lava Men
League of Losers
Leatherneck Raiders
Lebeau Clan
Legion Of Galactic Guardians 2099 (Amalgam Comics)
Legion of Monsters
Legion of Night
Legion of the Unliving
Lemurians
Lethal Legion
Leviathan
Leviathan (Marvel Anime)
Liberators
Liberty Legion
Livewires
Living Erasers
Lizard Men
Lockjaw and the Pet Avengers
The Lodge (Ultraverse)
Loners
Lost Souls
M
Maelstrom's Minions
Maggia
Magistrates
Magnetic Men (Amalgam Comics)
Mandarin's Minions
Mandroids
Mannites
Magneto's Acolytes (see Acolytes)
Marauders
Marvel Knights
Marvel Zombies
Masters of Evil
The Mavericks
Mega Morphs
MI-13
Micronauts
Midnight Sons
The Mighty Avengers
Mindless Ones
Minions of Menace
Monster Hunters
Morlocks
Motormouth and Killpower
Mutant Force (see Resistants)
Mutant Liberation Front
Mys-Tech (Marvel UK)
N
Nasty Boys
National Force
Neo
Neo-Knights
New Avengers
New Canaanites
New Enforcers
The All-New Exiles (Ultraverse)
New Hellions
New Men
New Mutants
New Invaders
New Warriors
New X-Men
Nextwave
Neyaphem
Nick Fury's Howling Commandos
Night Shift
Nightstalkers
Norns
Nova Corps
O
O-Force
Octessence
Office of National Emergency
Olympians
Omega Flight
Omega Gang
The Order
The Outcasts
The Outlaws
P
Pacific Overlords
Pale Riders
Pantheon
Paragons
People's Defense Force
People's Protectorate (see Supreme Soviets)
Pet Avengers
Point Men
Power Broker, Inc.
Power Pack
Press Gang
Pride
Prime Sentinels
Project Pegasus
Project Rebirth
Project Wideawake
Psi-Force
Psionex
Purifiers
Psycho-nauts (Epic Comics)
Psycho-warriors (Marvel UK)
Q
Quattro (Ultraverse)
Queen's Vengeance
R
Rangers
R.C.X.
Reavers
Recorders
Redeemers
Renegades
Resistants
Revengers
Right
Rocketeers
Roxxon Oil
The Runaways
S
Salem's Seven
Santerians
Savage Land Mutates
Savage Land Races
Savage Six
Scarlet Knights
Scarlet Spiders (Red Team)
Scourges
Schutz Heiliggruppe
Secret Avengers
Secret Empire
Secret Warriors
Sentinels
Serpent-Men
Serpent Society
Serpent Squad
Shadow Initiative
Shadow-X
Shadowmasters
S.H.E.
S.H.I.E.L.D.
Shock Troop
Siberforce
Sinister Six
Sinister Society (Amalgam Comics)
Sinister Syndicate
Sisterhood of the Wasp
Sisters of Sin
The Six
Six-Fingered Hand
Six Pack
Skeleton Crew
Skrull Kill Krew
Slingers
Soldiers of Misfortune
The Solution (Ultraverse)
Sons of Satannish
Sons of the Serpent
Sons of the Tiger
Soviet Super-Soldiers
Spaceknights
Space Phantoms
Space Pirates
Special Executive
The Spider Society
Spider-Slayers
The Spinsterhood
Spirits of Vengeance
The Sportsmen (Ultraverse)
The Squad (Ultraverse)
Squadron Sinister
Squadron Supreme
Squadron Supreme (Supreme Power)
Stane International
Starforce
Starjammers
Stark Enterprises
Stark Industries
Stark International
Stark Solutions
Stark Fujikawa
Star Masters
The Strangers (Ultraverse)
S.T.R.I.K.E.
Styx and Stone
Subterraneans
Sunset Riders
Super-Axis
Super Soldiers
Superguardians
Superhuman Restraint Unit
Supreme Soviets
S.U.R.F.
S.W.O.R.D.
T
TNTNT (Ultraverse)
Team America (see Thunderiders)
Team X
Technet
Temploids (Marvel UK)
Teen Brigade
Terrible Trio
Terror Inc.
Thieves' Guild (see Gambit)
THEM
Thor Corps
Thunderbolts
Thunderiders
Time Variance Authority
Titanic Three
Trash
Triumvirate of Terror
Triune Understanding - Triune Understanding is a religious cult created by Kurt Busiek for volume three of the Marvel Comics Avengers series.
True Believers
The Twelve
U
U-Foes
U-Men
The Ultimates
Ultimatum
Ultimate Fantastic Four
Ultimate X-Men
Ultraforce (Ultraverse)
Uncanny Avengers
Uncanny X-Force
Uncanny X-Men
Underground
Undying Ones
Unholy Three
Uni-Mind
Unified Thieves and Assassins Guild of New Orleans
