-K-M-
As the thread says, who has generally killed off the most well-established characters? For instance I posted three examples
Brian Bendis
-Agamotto?: The New Avengers #6 (vol. 2)
-Ant-Man II: Avengers #500 (Brought back by different writer)
-Ares: Seige #2
-Brother Voodoo: The New Avengers #6 (vol. 2)
-Daniel Drumm??: New Avengers
-Doctor Octopus (Ultimate U): Ultimate Spider-Man #157
-Echo: Moon Knight #9 (vol 4)
-Hawkeye: Avengers #502 (Brought back in House of M by Bendis)
-Guardian: New Avengers #16 (Brought back by different writer)
-Gwen Stacy - Original (Ultimate U): Ultimate Spider-Man #62
-Jack of Heart: Avengers #500 (Brought back by different writer)
-Jennifer Kale???: New Avengers
-Major Mapleleaf II: New Avengers #16
-Lindy Reynolds: Dark Avengers #14
-Loki: Seige #4 (Brought back by different writer)
-Puck I: New Avengers #16 (Brought back by different writer)
-Puck II: New Avengers #16
-Richard Fisk: Daredevil #31
-Shaman: New Avengers #16 (Brought back by different writer)
-Sentry: Seige #4
-Spider-Man (Ultimate U): Ultimate Spider-Man
-Victoria Hand: New Avengers #32 (vol.2)
-Vindicator II: New Avengers #16 (Brought back by different writer)
-Vision: Avengers #500 (Brought back by different writer)
-Xorn???: New Avengers
Also responsible for removing:
*Chaos Magic: Avengers Disassembled (Brought back by different writer)
*Mutant population: House of M (starting to be brought back by a different writer)
Jeph Loeb
-Angel (Ultimate U): Ultimatum #4
-Beast (Ultimate U): Ultimatum #1
-Blob (Ultimate U): Ultimatum #3
-Cannonball (Ultimate U): Ultimatum #3
-Cyclops (Ultimate U): Ultimatum #5
-Dazzler(Ultimate U): Ultimatum #1
-Detonator (Ultimate U): Ultimatum #3
-Doctor Doom (Ultimate U): Ultimatum #5
-Doctor Strange (Ultimate U): Ultimatum #4
-Emma Frost (Ultimate U): Ultimatum #3
-Forge (Ultimate U): Ultimatum #3
-Hard-Drive (Ultimate U): Ultimatum #3
-Hank Pym (Ultimate U): Ultimatum #3
-Longshot (Ultimate U): Ultimatum #3
-Magneto (Ultimate U): Ultimatum #5
-Nightcrawler (Ultimate U): Ultimatum #1
-Polaris (Ultimate U): Ultimatum #3
-Professor X (Ultimate U): Ultimatum #2
-Sunspot (Ultimate U): Ultimatum #3
-Thor (Ultimate U): Ultimatum #3 (brought back by a different writer)
-Wasp (Ultimate U): Ultimatum #2
-Wolverine (Ultimate U): Ultimatum #5*
*Many more chracters died in that event, but they were written by different writers
Rick Remender
-Ant-Man III (Eric O'Grady): Secret Avengers #23 (kind of brought back, LMD is being used)
-Archangel: Uncanny X-Force #18 (brought back by same writer)
-Blob (AoA U): Uncanny X-Force #33
-Captain Marvel: Secret Avengers #28
-Daken??: Uncanny X-Force #34
-Demon-Ock?? (AoA U): Uncanny X-Force #13
-Fantomex: Uncanny X-Force #27
-Ice Man (AoA U): Uncanny X-Force #24
-Jamie Braddock: Uncanny X-Force #23
-John Steele: Secret Avengers #29
-Kirka Yashida (AoA U): Uncanny X-Force #12
-Max Fury: Secret Avengers #33
-Storm/Orordius??? (AoA U): Uncanny X-Force #13
-Punisher: Dark Reign: The List - The Punisher #1 (brought back by same writer)
-Skinless Man???: Uncanny X-Force #34
-Sunfire (AoA U): Uncanny X-Force #18
-Wild Child (AoA U): Uncanny X-Force #17
Brian Bendis
-Agamotto?: The New Avengers #6 (vol. 2)
-Ant-Man II: Avengers #500 (Brought back by different writer)
-Ares: Seige #2
-Brother Voodoo: The New Avengers #6 (vol. 2)
-Daniel Drumm??: New Avengers
-Doctor Octopus (Ultimate U): Ultimate Spider-Man #157
-Echo: Moon Knight #9 (vol 4)
-Hawkeye: Avengers #502 (Brought back in House of M by Bendis)
-Guardian: New Avengers #16 (Brought back by different writer)
-Gwen Stacy - Original (Ultimate U): Ultimate Spider-Man #62
-Jack of Heart: Avengers #500 (Brought back by different writer)
-Jennifer Kale???: New Avengers
-Major Mapleleaf II: New Avengers #16
-Lindy Reynolds: Dark Avengers #14
-Loki: Seige #4 (Brought back by different writer)
-Puck I: New Avengers #16 (Brought back by different writer)
-Puck II: New Avengers #16
-Richard Fisk: Daredevil #31
-Shaman: New Avengers #16 (Brought back by different writer)
-Sentry: Seige #4
-Spider-Man (Ultimate U): Ultimate Spider-Man
-Victoria Hand: New Avengers #32 (vol.2)
-Vindicator II: New Avengers #16 (Brought back by different writer)
-Vision: Avengers #500 (Brought back by different writer)
-Xorn???: New Avengers
Also responsible for removing:
*Chaos Magic: Avengers Disassembled (Brought back by different writer)
*Mutant population: House of M (starting to be brought back by a different writer)
Jeph Loeb
-Angel (Ultimate U): Ultimatum #4
-Beast (Ultimate U): Ultimatum #1
-Blob (Ultimate U): Ultimatum #3
-Cannonball (Ultimate U): Ultimatum #3
-Cyclops (Ultimate U): Ultimatum #5
-Dazzler(Ultimate U): Ultimatum #1
-Detonator (Ultimate U): Ultimatum #3
-Doctor Doom (Ultimate U): Ultimatum #5
-Doctor Strange (Ultimate U): Ultimatum #4
-Emma Frost (Ultimate U): Ultimatum #3
-Forge (Ultimate U): Ultimatum #3
-Hard-Drive (Ultimate U): Ultimatum #3
-Hank Pym (Ultimate U): Ultimatum #3
-Longshot (Ultimate U): Ultimatum #3
-Magneto (Ultimate U): Ultimatum #5
-Nightcrawler (Ultimate U): Ultimatum #1
-Polaris (Ultimate U): Ultimatum #3
-Professor X (Ultimate U): Ultimatum #2
-Sunspot (Ultimate U): Ultimatum #3
-Thor (Ultimate U): Ultimatum #3 (brought back by a different writer)
-Wasp (Ultimate U): Ultimatum #2
-Wolverine (Ultimate U): Ultimatum #5*
*Many more chracters died in that event, but they were written by different writers
Rick Remender
-Ant-Man III (Eric O'Grady): Secret Avengers #23 (kind of brought back, LMD is being used)
-Archangel: Uncanny X-Force #18 (brought back by same writer)
-Blob (AoA U): Uncanny X-Force #33
-Captain Marvel: Secret Avengers #28
-Daken??: Uncanny X-Force #34
-Demon-Ock?? (AoA U): Uncanny X-Force #13
-Fantomex: Uncanny X-Force #27
-Ice Man (AoA U): Uncanny X-Force #24
-Jamie Braddock: Uncanny X-Force #23
-John Steele: Secret Avengers #29
-Kirka Yashida (AoA U): Uncanny X-Force #12
-Max Fury: Secret Avengers #33
-Storm/Orordius??? (AoA U): Uncanny X-Force #13
-Punisher: Dark Reign: The List - The Punisher #1 (brought back by same writer)
-Skinless Man???: Uncanny X-Force #34
-Sunfire (AoA U): Uncanny X-Force #18
-Wild Child (AoA U): Uncanny X-Force #17