- "K" (MH ver. SGT-Tanker) 3
- "KaMi" Daniel D 2
- K'rool 33
- K'rool and Alpha 2
- K. Jockey 2
- K. Rutkowski (War Mech) 4
- K. Rutkowski (WarMech) 2
- K1A14G86 4
- KAIN 28
- KARMATIZED 2
- KAZUA 3
- KDR_11k 6
- KENNI 2
- KILLIGULA 2
- KILLMAN 2
- KIMOSUGI CowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCowCow 2
- KING B 4
- KINGSPYDER 5
- KINGshinobi 13
- KINGshinobi (*modified*) 2
- KJ Olson aka MoUtH4WaR 5
- KJS 2
- KLINGON HONOR GUARD TEAM 2
- KOFF 3
- KS 3
- KT 3
- KZZZ 2
- K_St_theJunior 3
- KaKeMIX and Lt.UnReaL 3
- KaMi 4
- KaPLaN 3
- KaRaR 2
- KaRn 3
- Kaal 2
- Kaal"TheSinew"979 42
- Kaal"TheSinew"979 *Edit*by-KeLLeR 15
- Kaal"TheSinew"979 *Edit*by-KeLLeR & EvilGrins 2
- Kaal979 57
- Kabal 2
- Kabby Mac 2
- KageOni 2
- Kai 2
- Kai-Eerik "Turha." Komppa 2
- Kaithofis 2
- Kal Corp 18
- Kalkus 3
- Kamakazi 3
- Kamek 3
- Kamikaze 2
- Kamil 'Jammer' Wolnikowski 4
- Kamil R 2
- Kangus 9
- Kantham 37
- Kaoh 2
- Karl 'The Machine' Mitton 9
- Karlos 3
- Kart 4
- Kasarul 3
- Kasper "Coreper" van de Laar 7
- KastoR 3
- Katts Meow 2
- Kayako 14
- Kayron James Mercieca (007) 2
- KazeoHin 4
- KeLLeR 10
- KeVirus 2
- Keggie 2
- Keitaro 3
- Keith "swag" Balding 2
- Keith Hair 2