| Fighter | Nickname | Height | Weight | Association | |
 |
Kareem Coston | 0'0" (0 m) |
185 lbs (83.91 kg) |
Power of One | |
|
Kathy Solorzano | 5'3" (1.6 m) |
115 lbs (52.16 kg) |
One Nation Fight Team | |
|
Kazuo Takahashi | "Yoshiki" | 5'10" (1.78 m) |
203 lbs (92.08 kg) |
D-One Gym |
|
Ken Sells | 6'0" (1.83 m) |
155 lbs (70.31 kg) |
One on One Fight Company | |
|
Kenji Honda | 5'6" (1.68 m) |
145 lbs (65.77 kg) |
Hybred Wrestling Mugen G'z One | |
|
Kiyoshi Kitamura | 5'7" (1.7 m) |
132 lbs (59.87 kg) |
X-One Gym Shonan | |
|
Koji Mori | 5'6" (1.68 m) |
155 lbs (70.31 kg) |
X-One Gym Shonan | |
|
Koji Nashiki | 0'0" (0 m) |
123 lbs (55.79 kg) |
X-One Gym Shonan | |
|
Koji Tanaka | "Kouzi" | 5'8" (1.73 m) |
134 lbs (60.78 kg) |
Team One |
|
Lee Burns | 5'9" (1.75 m) |
155 lbs (70.31 kg) |
One Way Out | |
|
Liam Czernozukow | 0'0" (0 m) |
265 lbs (120.2 kg) |
Unit One MMA | |
|
Lkhagvadorj Tumur-Ochir | 5'10" (1.78 m) |
145 lbs (65.77 kg) |
One Team Fighting Center | |
|
Lonnie Campbell | "The Bako Bad Boy" | 0'0" (0 m) |
185 lbs (83.91 kg) |
One Nation MMA |
|
Lorena Markezic | "Psycho" | 5'6" (1.68 m) |
145 lbs (65.77 kg) |
One Kick's Gym / Sergio Penha BJJ |
|
Lorenz Constantino | "Steel Punch" | 5'4" (1.63 m) |
115 lbs (52.16 kg) |
One Revolt |
|
Lucas Abreu | "Alemao" | 5'9" (1.75 m) |
185 lbs (83.91 kg) |
Team One One |
|
Lucas Araujo | "Batata" | 5'9" (1.75 m) |
170 lbs (77.11 kg) |
Top One |
|
Luis Barrios | 5'9" (1.75 m) |
234 lbs (106.14 kg) |
One Punch | |
|
Mac Brown | 5'7" (1.7 m) |
145 lbs (65.77 kg) |
Power of One | |
|
Mackenzie Stiller | "Mack Judo" | 5'2" (1.57 m) |
125 lbs (56.7 kg) |
One Touch Fight Team |
