| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Ernesta | Kareckaite | Heavy-Handed | 5' 9" | 125 lbs. | 71.0" | Orthodox | 6 | 1 | 1 | |
| Impa | Kasanganay | Tshilobo | 5' 11" | 170 lbs. | 75.0" | Orthodox | 9 | 2 | 0 | |
| Jinnosuke | Kashimura | 5' 7" | 155 lbs. | 71.0" | Southpaw | 4 | 2 | 0 | ||
| Nadia | Kassem | 5' 5" | 125 lbs. | 66.0" | Southpaw | 5 | 2 | 0 | ||
| Yusuke | Kasuya | 5' 7" | 155 lbs. | -- | Southpaw | 9 | 3 | 0 | ||
| Tetsuji | Kato | -- | 155 lbs. | -- | Orthodox | 20 | 10 | 0 | ||
| Hisaki | Kato | 6' 0" | 185 lbs. | -- | 8 | 2 | 0 | |||
| Brad | Katona | Superman | 5' 6" | 135 lbs. | 64.0" | Orthodox | 16 | 5 | 0 | |
| Calvin | Kattar | 5' 11" | 145 lbs. | 72.0" | Orthodox | 23 | 10 | 0 | ||
| Sarah | Kaufman | 5' 5" | 135 lbs. | 66.0" | Orthodox | 18 | 4 | 0 | ||
| Lone'er | Kavanagh | 5' 6" | 125 lbs. | 67.0" | Orthodox | 9 | 1 | 0 | ||
| Yusuke | Kawaguchi | 6' 0" | 255 lbs. | -- | 18 | 12 | 0 | |||
| Canaan | Kawaihae | 6' 0" | 145 lbs. | 71.0" | Southpaw | 6 | 2 | 0 | ||
| Tatsuya | Kawajiri | Crusher | 5' 7" | 145 lbs. | 69.0" | Orthodox | 36 | 11 | 2 | |
| Ryo | Kawamura | 5' 11" | 205 lbs. | -- | Orthodox | 18 | 9 | 4 | ||
| Masuto | Kawana | Mast | 5' 6" | 145 lbs. | 69.0" | Orthodox | 10 | 4 | 0 | |
| Doug | Kay | -- | -- | -- | 0 | 0 | 0 | |||
| Toshiomi | Kazama | 5' 7" | 135 lbs. | 69.0" | Orthodox | 11 | 5 | 0 | ||
| Julie | Kedzie | 5' 5" | 135 lbs. | -- | Orthodox | 16 | 13 | 0 | ||
| Ryan | Keenan | 5' 10" | 170 lbs. | -- | 6 | 2 | 0 | |||
| Losene | Keita | Black Panther | 5' 8" | 145 lbs. | 72.0" | Orthodox | 16 | 1 | 0 | |
| CJ | Keith | 6' 0" | 155 lbs. | -- | Orthodox | 8 | 4 | 0 | ||
| Chris | Kelades | The Greek Assassin | 5' 7" | 125 lbs. | 68.0" | Orthodox | 9 | 3 | 0 | |
| Brian | Kelleher | Boom | 5' 6" | 135 lbs. | 66.0" | Switch | 24 | 16 | 0 |