';
| Fighter | Nickname | Height | Weight | Association | |
| Hisaki Kotoku | 6'2" (1.88 m) |
205 lbs (92.99 kg) |
Team Alpha Male | ||
| Hisashi Kaneko | 0'0" (0 m) |
145 lbs (65.77 kg) |
Reversal Gym Tachikawa Alpha | ||
| Hugo Elias | 0'0" (0 m) |
170 lbs (77.11 kg) |
Lions Alpha Team | ||
| Huseyn Guluzade | 5'9" (1.75 m) |
145 lbs (65.77 kg) |
Alpha Top Team | ||
| Ian Murphy | 5'10" (1.78 m) |
185 lbs (83.91 kg) |
Team Alpha Male | ||
| Ignacio Ortiz | 5'8" (1.73 m) |
145 lbs (65.77 kg) |
Team Alpha Male | ||
| Igor Zaltsman | "The Warrior" | 5'9" (1.75 m) |
155 lbs (70.31 kg) |
Alpha Nerds | |
| Ilkin Mancanov | 5'6" (1.68 m) |
135 lbs (61.23 kg) |
Alpha Top Team | ||
| Isaac Thomson | 5'11" (1.8 m) |
145 lbs (65.77 kg) |
Team Alpha Male | ||
| Isaac Thompson | 5'11" (1.8 m) |
145 lbs (65.77 kg) |
Team Alpha Male | ||
| Isidro dela Paz III | 0'0" (0 m) |
135 lbs (61.23 kg) |
The Alpha One | ||
| Ismael Majano | "Tito" | 5'9" (1.75 m) |
170 lbs (77.11 kg) |
Alpha Omega MMA | |
| Jack Dawson | 0'0" (0 m) |
205 lbs (92.99 kg) |
Alpha Training Centre | ||
| Jair Landa | 5'7" (1.7 m) |
125 lbs (56.7 kg) |
Lions Alpha Team | ||
| Jakub Holly | 0'0" (0 m) |
185 lbs (83.91 kg) |
Alpha Gym Karlovy Vary | ||
| Jamal Ouzarida | 0'0" (0 m) |
158 lbs (71.67 kg) |
Alpha Jiu-Jitsu Academy | ||
| Jamie Moyle | 5'1" (1.55 m) |
125 lbs (56.7 kg) |
Team Alpha Male | ||
| Jarel Askew | 6'2" (1.88 m) |
168 lbs (76.2 kg) |
Team Alpha Male | ||
| Javier Martinez Jr. | "El Gallo Negro" | 0'0" (0 m) |
125 lbs (56.7 kg) |
Team Alpha Male | |
| Javier Quintero | "Argentino" | 5'6" (1.68 m) |
125 lbs (56.7 kg) |
The Fighting Nerds / Alpha Club | |