This is a list of the defunct / non canon Megaman Teams. Most URLs won't work, but you might still be able to look some up on Archive.org . For the active teams see the Team List.

Classic Series

Mega Man 1

The Sinister Six

The Chibit Eight

A Powered Up team with .... Quickman instead of Bombman. Why not?
I found this randomly on google one day and knew nothing of it before then. Go figure.
The old URL - Currently frozen.
[1] Archived through WayBack. Not much content and here be broken images.

Mega Man 2

The Dream Team

The first Mega Man 2 Team. Also the first team to go belly-up.
The old URL
megaman2.cjb.net

The Megaman Super Site

The "MM2 Super Team" aspect of the site seems to have gone dead.
The old URL

Wily's Warriors

Mega Man 3

The X-treme team aka The Elite Eight

That OTHER Megaman 3 team. Yeah ..... it's ..... them. *shudder* These guys sucked. Their racism (yes, RACISM, a Megaman page was actually racist) and unhealthy obsession with Gauntlet and the Mechanical Maniacs resulted in them being kicked out of the community. They have changed into a non-Megaman page since.
Eventually they were hacked. They started it.
eliteeight.cjb.net - The original redirect.
mmxt.cjb.net - The main old URL
On Homestead
On Geocities (later hacked by Gauntlet)
On Geocities (again)
On Geocities (again)
On Brinkster

Gamma's Deciples

The Rockman 3 team that went belly up. Their Shadowman was also Starman on another Team.
The old URL
Maybe a different team?

Mega Man 4

Cossack's Creations

The first MM4 Team, led by Kirk aka Skullman. Some of the older teams usually refer to this team rather than Cossack's Comrades when featuring the Robot Masters from Mega Man 4 in their epilogues as they were contemporaries. Dust tried to revive them, but failed.
Started by the origional Dustman.
The old URL
Their original URL

Cossack's Soldiers

The second MM4 team.
The old URL

Mega Man 5

Darkman's Robot Warriors

The newer MM5 team. Now changed back to Starman's Moonbase.
Their Stoneman continued the team's epilogues himself on a solo site.
The old URL
stoneman.cjb.net - Stone's solo site
on Geocities

The Deception Force

A MM5 team that was a subsection of the White Tower. Couldn't decide if it wanted to stay a "team" page or not.
The old URL

Blue's Deciples (Take Two)

The first MM5 team. Made by D.R.W.'s Starman with a whole new membership.
The old URL
The original URL

The Dark Dudes

A team of the Darkmen from MM5? People will do anything to be on a team, it seems…
The old URL

The Ascendant Androids

Mega Man 6

The Robot Rebels

The one and only MM6 team!
The old URL

World's Strongest

The one and only MM6 team!
The old URL
Another Archive

The Great Eight

The one and only MM6 team!
Robot Rebels, World's Strongest, and the Great Eight all formed at the same time. Hence the joke "the one and only MM6 team."
The old URL

Vertexes of the Meshed

The one and only MM6 team!
The old URL

X's Gladiators

The one and only MM6 team!
The old URL

Metallic Mercenaries

The one and only MM6 team!
Its leader also was Plant Man on the current Mega Man 6 Team, the Armored Assassins, for quite a while.
The old URL
Another old URL
On Geocities
On Freewebs

Armored Assassins

The one and only MM6 Team!
On Profusehost
On Freewebs
On SiteSled
Yet another URL

Mega Man 7

Lethal 8

This MM team was off to a good start before they disbanded.
The old URL

The Deadly Eight

A MM7 team. Never updated. Not even once.
The old URL

The Enigma Eight

The inquisitive MM7 team. Tried to reform once, but it didn't take,
The old URL
Another URL

Drastic Measures

Mega Man 8

The Elite Eight #2

Former MM8 Team. Clownman changed it to a solo page, Clownman's circus.
The first Elite Eight was the name of the Xtreme Team before they dropped it. This one has nothing to do with them, they just liked the name.
The old URL

The Elite Eight #3

A MM8 team. Did not last long at all. Had no connection with the previous team.
The old URL

The Eighth Kingdom

Another MM8 team, but not a noticeable one by any means.
The old URL

The Robotic Raiders

A Megaman 8 team, their Astroman was the same as the Technological Tyrants!
The old URL

Titanium Titans

A titanic Megaman 8 team.
The old URL
Another URL

Mechanized Monsterz

The Monsterous Megaman 8 team, before they became "Gravy with no Z," the result of letting non-community members/RL friends on the team.
The old URL

Deep impact

Mega Man 9

Chaos Crusaders

A short lived Megaman 9 Team.
The old URL

Mega Man 10

Heavn's Hammarz aka Aggravated Assault

Created as a joke by members of the Mechanical Maniacs and various other in the community.
It was Rich's (Magnetman's) idea.
It lampooned many cliches found in MM teams.
The old URL

Mega Man & Bass

Elements of Doom aka The 6 Horsemen

The old URL

Diabolical 6

Dropped before it even began.
The old URL

The Legendary Eight

A subsite of Anime Extreme. The team aspect of this page seems dead. Hell, I don't even think these guys said hello to the rest of the teams.
The old URL

King's Knights

Another R&F team that never made any progress almost a year after forming.
The old URL

Technological Tyrants

Around for a very long time, but never updated after switching to a Flash site.
The Tyrants was the fourth R&F team, but reformed later on.
Their leader, Naop, was featured on the Sinister Six a bit.
The old URL
On Geocities
On Angelfire

Mega Man & Bass 2

The Time Trekkers

A team of misfits, the R&F Wonderswan team!
The old URL

Dimesional Destroyers

Disbanded before they could get a full roster!

Mega Man: The Wily Wars

Terrible Trio

The Wily Wars team! (There was a Wily Wars team? Looks like....)
The old URL

Mega Man in Dr. Wily's Revenge

Electric Guardians

The MM1 GB team. The first to form to be non-canon specifically.
The old URL

Mega Man V (Game Boy)

Children of the Void

Iceman of The Sinister Six was their Pluto.
Started life as The Lethal Eight, a MM7 team.
The old URL

Cosmic Gladiators

Played a role during the Business of War
Was briefly Cosmic Crusaders.
The old URL
On Tripod

Astrum Imperium v1 AKA Heavenly Bodies and CORONA

Sunstar on this team was also Wavegirl on Gila Gladiators.
On the Technological Tyrants
On webs'
On createaforum
On zyro
On Proboards
On Enjin
On yooco

Misc. Mega Man bosses

The Champions of Evil

Sunstar, Enker, and the other RM-type robots, including the Wily Wars robots. Kudos to Koddiss for trying to do something more original!
The old URL

Hi-Tech Expressions's PC Mega Man games

The Sinister Six AKA The Demonic 9

Started out as a legitimate team in it's own right. Eventually was taken over (with permission) by Gauntlet of The Mechanical Maniacs as a prank.
The old URL
The old URL (as a real team)
The prank

The Dark-Hunters

A Megaman 3 PC team
The old URL

The Gila Gladiators

A Megaman PC and Megaman 3 PC Team. Went belly-up.
Turned into Beta Unknown.
Castala was their Wavegirl and was also Sunstar in Astrum Imperium in it's many incarnations.
The old URL

Beta Unkown

Spun out of Gila Gladiators with Wavegirl at the helm. Went through many forums, but never got anywhere.
The old URL
Another URL

Rockman Strategy

The Tantalizing Tacticians.

A very obscure team for a very obscure game.No known site.

Megaman X Series

Mega Man X

X-Hunter HQ aka The Three Team

Former MM3 team turned into a MMX1 team. Now it has bit the dust.
The old URL

X Team

Immediately after the X Hunter HQ fell, this MMX1 team replaced it. Progress stopped almost immediately.
The old URL

Maverick Hunter Unit X

The old URL

Alpha Movement

Was started by Rich of S6 and Mechanical Maniacs fame.
Lasted a long time.
The old URL
On Tripod

Mega Man X2

The X-Hunters

Once the MMX2 Team. Now an all-purpose video game page.
The old URL

X-Hunters #2

Unusual team with the combo of the three X-Hunters from MMX2.
No connection with the previous team.
The old URL

Code: Island Attackers

These guys lasted a long time and wound up hosting COSMOS and Drastic Measures. They also started the second Megaman Teams United Forum.
The old URL
On Tripod

Mega Man X3

Doppler's Minions

The MMX3 team. Reformed quite a few times.
The old URL

Rhino's Veterans

Very ...... white. Or grey.
The old URL

The Sultans of Smeg

This MMX3 team had a forum, but no actual site even a year after forming. They were dropped for a lack of activity.
The old URL

Crimson Berzerkers / Doppler's Denizens

The old URL

Mega Man X4

X-Force

Headed by Ben, this team lasted a long while and was so respected that it became off limits after it's end, even while the community was booming.
Nostalgia page
On Crosswinds
On Geocities
More Geocities
The same account as above, but a different URL
Ben liked Geocities
A LOT
Sinister6.com nostalgia page

Mega Man X5

Maverick Mayhem

A spin-off from the MM3 XT, this was a MMX5 team. They've never updated since forming, so........
The old URL

Horsemen of the Earth Crisis

After this MMX5 team went on hiatus for the third time, Makenshi (Spike Rosered, Waveman) decided to let it die rather than restart it again.
The old URL

Critical Mass

They existed for quite a while, but didn't do too much in that time.
The old URL
On Tripod

Mega Man X6

The Authority

A MMX6 team headed under Blaze Phoenix. Headed under Magma Dragoon of the X-Force.
The Old URL

Reploid Rebellion

They did a bit before tapering off.
The old URL

Mega Man X7

Red Alert

Nobody had the heart to take them off the list because their members were active within the community.
The old URL
On Tripod (older)

Mega Man X8

New Generation

The old URL

Copy Crisis

A longer lasting X8 team, leader was Enigma!
Started this (very inactive) wiki.
Visit Copy Crisis

Orbital Odyessy

Just a joke team.

Megaman Battle Network Series

MegaMan: Battle Network 1

Viral Infection

Included members form the Mechanical Maniacs and Sinister Six.
Those same members kept the game from ever having a team form around it again.
Visit The Viral Infection Memorial
On Geocities
On Kiwibonga
On vi.mmexe.com
On Recycledhosting

MegaMan: Battle Network 2

Battle Net: The EXE Network

The short-lived Megaman EXE 2 team.
The old URL

Navi Warefare

The second EXE 2 team.
The old URL

Gospel

A very red website that just sorta stopped after it was made.
gospelserver.cjb.net - The old URL
Actually on Geocities

Aftermath

The old URL

MegaMan: Battle Network 4

Darklight Mercenaries

Lasted for a longish time.
Had an interactive "Request board" where members of the team would "take jobs."
The old URL

MegaMan: Battle Network 5

The Proto Hunters

Battle Network 5 team that's maybe, also a MM8 team?
The old URL
Another link

The Battle Network 5 Team

Yes, that's what they called themselves!
This was totally overlooked in it's time!
The old URL

MegaMan: Battle Network 6

Pentabulous Five

The Fabulous Falzar Five

Never really got off the ground. Had one member, but left due to the leader. One pending member, but zero updates.
The old URL
On Geocities
On Webs
On 000Webhost

Network Transmission

Lost in Transmission

Never got off the ground!
Visit Lost in Transmission

Megaman Star Force

MegaMan: Star Force

COSMOS

Shared members with Code: Island Attackers and Drastic Measures.
Was subhosted by CIA.
The old URL

Megaman Legends Series

Mega Man Legends

New Genesis

Formerly another EXE team, it later decided to become a MM Legends team. It never got off the ground, however.
The old URL

Megaman Zero Series

Mega Man Zero

Zero Factor

The first Rockman Zero team. Based around all the bosses of Zero 1.
The old URL

The Cyber Elves

The second Rockman Zero team. In this one people joined as Cyber Elves (from Zero 1).
The old URL

Mega Man Zero 3

Weil's Forces

This Megaman Zero 3 Team, announced on a whim, disbanded before it could even fill its roster.
The forum was found here.

Divine Judgment

As far as I can tell they never got a site up.

Miscellaneous

Megaman United

This is not to be confused with the Mega Man Teams United forum created by Rebel. All teams hung out at this page and some members from various teams were part of it's membership list, though now it is no longer an "official team" page and has been abandoned.
The old URL

The X-League

Based on all the SNES MMX games. Like the first Megaman United, but not as remembered.
[xleague.cjb.net - The old URL]

Megaman United #2

Created by Gauntlet out of the Mechanical Maniacs' forum, this was a merger of all the main teams of the time - the Mechs, the Sinister Six, the X-Force, Robotic Raider, Technological Tyrants, and Viral Infection. It was meant to be based off the most successful feature of the first Megaman United - the forums.
The old URL
Another URL

Megaman Teams United

Made by Rebel of Code: Island Attackers. This was like Gauntlet's Megaman United in that it was the main forum of several Megaman Teams.
The old URL

Past and Non-Canon Megaman Teams