';
| Fighter | Nickname | Height | Weight | Association | |
| Filip Kopcok | 5'8" (1.73 m) |
170 lbs (77.11 kg) |
Octagon Fighting Academy | ||
| Filip Klein | 5'11" (1.8 m) |
155 lbs (70.31 kg) |
Octagon Fighting Academy | ||
| Filip Ivanic | 0'0" (0 m) |
135 lbs (61.23 kg) |
Octagon Fighting Academy | ||
| Filip Bruchac | 0'0" (0 m) |
145 lbs (65.77 kg) |
Octagon Fighting Academy | ||
| Frantisek Fodor | 5'9" (1.75 m) |
158 lbs (71.67 kg) |
Octagon Fighting Academy | ||
| Gabor Boraros | "Punisher" | 5'8" (1.73 m) |
171 lbs (77.56 kg) |
Octagon Fighting Academy | |
| Gary Espinar | 5'7" (1.7 m) |
135 lbs (61.23 kg) |
Octagon MMA Penang | ||
| George Pacurariu | "Constantine" | 5'7" (1.7 m) |
150 lbs (68.04 kg) |
Octagon MMA | |
| Gun Hong Kim | 0'0" (0 m) |
125 lbs (56.7 kg) |
Octagon Multi Gym | ||
| Haleri Meana | 0'0" (0 m) |
115 lbs (52.16 kg) |
Octagon Fight | ||
| Hugo Prada | 6'0" (1.83 m) |
155 lbs (70.31 kg) |
Octagon MMA | ||
| Hussein Khamanaev | 0'0" (0 m) |
154 lbs (69.85 kg) |
Octagon Fighting Club | ||
| Igor Ivanov | 0'0" (0 m) |
170 lbs (77.11 kg) |
Octagon Kiev | ||
| Ilias Duriev | 0'0" (0 m) |
205 lbs (92.99 kg) |
Octagon Fighting Club | ||
| Ilja Skondric | 6'1" (1.85 m) |
205 lbs (92.99 kg) |
Octagon Fighting Academy | ||
| Islam Avurkhanov | 0'0" (0 m) |
156 lbs (70.76 kg) |
Octagon Fighting Club | ||
| Issa Abiev | 0'0" (0 m) |
155 lbs (70.31 kg) |
Octagon Fighting Club | ||
| Ivan Ovchinnikov | 0'0" (0 m) |
145 lbs (65.77 kg) |
Octagon Kiev | ||
| Jae Hoon Moon | 5'7" (1.7 m) |
139 lbs (63.05 kg) |
Octagon Multi Gym | ||
| Jae Hwan Seo | 5'9" (1.75 m) |
155 lbs (70.31 kg) |
Octagon Multi Gym Anyang | ||