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| Fighter | Nickname | Height | Weight | Association | |
| Jung Joon Lee | 5'10" (1.78 m) |
154 lbs (69.85 kg) |
Octagon Multi Gym | ||
| Junior Pino | 0'0" (0 m) |
205 lbs (92.99 kg) |
Octagon Fight | ||
| Junior Reis | 0'0" (0 m) |
0 lbs (0 kg) |
Octagon Fight | ||
| Juraj Stefanovsky | 5'7" (1.7 m) |
155 lbs (70.31 kg) |
Octagon Fighting Academy | ||
| Kacper Kula | 0'0" (0 m) |
135 lbs (61.23 kg) |
Octagon Team Cieszyn | ||
| Kacper Kaczmarek | 0'0" (0 m) |
134 lbs (60.78 kg) |
Octagon Team Cieszyn | ||
| Kamil Cibinski | 6'1" (1.85 m) |
175 lbs (79.38 kg) |
Octagon Fighting Academy | ||
| Karim Ruzbakiev | "Beibarys" | 5'10" (1.78 m) |
205 lbs (92.99 kg) |
Octagon Fighting Team | |
| Klaudio Sladecek | 5'5" (1.65 m) |
135 lbs (61.23 kg) |
Octagon Fighting Academy | ||
| Klaudiusz Slawiczek | 0'0" (0 m) |
135 lbs (61.23 kg) |
Octagon Team Cieszyn | ||
| Klayton Mai | "The Python" | 5'9" (1.75 m) |
125 lbs (56.7 kg) |
Octagon MMA | |
| Kristian Bencik | 0'0" (0 m) |
137 lbs (62.14 kg) |
Octagon Fighting Academy | ||
| Kristina Sladekova | 0'0" (0 m) |
135 lbs (61.23 kg) |
Octagon Fighting Academy | ||
| Lazaro Fontes | "Soldado" | 0'0" (0 m) |
244 lbs (110.68 kg) |
Octagon Top Team | |
| Lindomar Charles | 0'0" (0 m) |
0 lbs (0 kg) |
Octagon Fight | ||
| Lubor Cervenak | 6'0" (1.83 m) |
135 lbs (61.23 kg) |
Octagon Fighting Academy | ||
| Lucas Dentinho | 0'0" (0 m) |
205 lbs (92.99 kg) |
Octagon Fight | ||
| Lukas Pajtina | 0'0" (0 m) |
170 lbs (77.11 kg) |
Octagon Fighting Academy | ||
| Lukas Meszaros | 0'0" (0 m) |
170 lbs (77.11 kg) |
Octagon Fighting Academy | ||
| Magdalena Rak | 5'7" (1.7 m) |
125 lbs (56.7 kg) |
Octagon Team Krakow | ||