Underworld Betta Hunter 2021
| Top Participant | Entries |
|---|---|
| PGC NAIM | 1 |
| PIAN PENANG | 1 |
| PILOT (AGMT) | 1 |
| PILOT BETTA | 1 |
| PINEAPPLE TOWN BETTA | 1 |
| PIRATES QN BETTA | 1 |
| PIYYA BETTA | 1 |
| PK BETTA | 1 |
| PLANDA BETTA | 1 |
| PMC BETTA | 1 |
| POJIE BETTA RDG | 1 |
| POK BEAR BETTA | 1 |
| POK JAN | 1 |
| POK LIAS | 1 |
| POK LONG | 1 |
| POK SIEN | 1 |
| POK YEH | 1 |
| POKKU BETTA | 1 |
| POKMANG KBG | 1 |
| PONDOK BETTA(KBG) | 1 |