 Jelly (Regular) | 220 | 10/128 |
| Jelly (Regular) | 11 | 7/128 |
| Jelly (Regular) | 460 | 2/128 |
| Jelly (Wilderness Slayer Cave) | 1,000 | 21/64 |
 Jennella | 6 | 20/512 |
| Jennella | 15 | 15/512 |
| Jennella | 16 | 10/512 |
| Jennella | 20 | 10/512 |
| Jennella | 38 | 5/512 |
| Jennella | 40 | Always |
 Joseph | 6 | 20/512 |
| Joseph | 15 | 5/512 |
| Joseph | 16 | 5/512 |
| Joseph | 20 | 10/512 |
| Joseph | 38 | 5/512 |
| Joseph | 50 | 5/512 |
| Joseph | 96 | 5/512 |
| Joseph | 120 | 5/512 |
 Juvenile custodian stalker | 400–750 | 20/160 |
| Juvenile custodian stalker | 3,000 | 1/975.24 |
 K'ril Tsutsaroth | 19,500–20,000 | 36.7/127 |
 Kalphite Guardian | 132 | 40/128 |
| Kalphite Guardian | 30 | 7/128 |
| Kalphite Guardian | 44 | 6/128 |
| Kalphite Guardian | 220 | 6/128 |
| Kalphite Guardian | 460 | 1/128 |
| Kalphite Guardian | 3,000 | 1/780.19 |
 Kalphite Queen (Crawling) | 15,000–20,000 | 5/126 |
| Kalphite Queen (Crawling) | 3,000 | 1/768 |
 Kalphite Soldier (Kalphite Lair) | 10 | 7/128 |
| Kalphite Soldier (Kalphite Lair) | 40 | 29/128 |
| Kalphite Soldier (Kalphite Lair) | 120 | 40/128 |
| Kalphite Soldier (Kalphite Lair) | 200 | 10/128 |
| Kalphite Soldier (Kalphite Lair) | 450 | 1/128 |
 Kalphite Worker | 1 | 8/128 |
| Kalphite Worker | 5 | 12/128 |
| Kalphite Worker | 15 | 34/128 |
| Kalphite Worker | 28 | 12/128 |
| Kalphite Worker | 42 | 3/128 |
| Kalphite Worker | 62 | 4/128 |
 Killerwatt (Idle) | 11 | 23/140 |
| Killerwatt (Idle) | 44 | 28/140 |
| Killerwatt (Idle) | 76 | 1/140 |
| Killerwatt (Idle) | 127 | 1/140 |
| Killerwatt (Idle) | 200 | 11/140 |
 King Black Dragon | 3,000 | 1/97.52 |
 King kurask | 2,000–3,000 | 16/124, 3 rolls |
| King kurask | 10,000 | 5/124, 3 rolls |