 Blood Reaver (Ancient Prison) | 5 | 1/16,384 |
 Blood-starved venator | 5 | 1/16,768, 3 rolls |
 Bloodthirsty Hydra | 5 | 1/16,384, 9 rolls |
 Bloodveld (Normal) | 5 | 1/4,096 |
| Blue dragon | 5 | 1/3,276.8 |
 Boris | 5 | 1/65,536 |
 Borrokar | 5 | 1/65,536 |
 Bronze dragon (Standard) | 5 | 1/3,942.02 |
 Brutal black dragon | 50 | 8/128 |
| Brutal black dragon | 5 | 1/4,946.11 |
 Brutal blue dragon (Catacombs of Kourend) | 20 | 8/128 |
| Brutal blue dragon (Catacombs of Kourend) | 5 | 1/3,869.28 |
 Brutal green dragon | 5 | 1/6,636.56 |
 Brutal red dragon | 30 | 8/128 |
| Brutal red dragon | 5 | 1/4,946.11 |
| Bryophyta (Members) | 5 | 1/4,096 |
 Bull shark | 5 | 1/12,800 |
| Castle wars supply crate | 100–120 | 1/11, 3 rolls |
 Catablepon (Level 49) | 5 | 1/6,464 |
 Cave abomination | 5 | 1/3,276.8, 3 rolls |
 Cave bug (Level 6) | 5 | 1/3,276.8 |
| Cave crawler | 5 | 1/16,384 |
 Cave horror (Worker) | 5 | 1/3,276.8 |
 Cave kraken (Cave kraken) | 5 | 1/4,266.67 |
 Cave slime | 5 | 1/4,096 |
 Cerberus | 5 | 1/35,498.67 |
 Chaos druid | 5 | 1/16,384 |
 Chaos druid warrior | 5 | 1/16,384 |
 Chaos dwarf | 5 | 1/3,276.8 |
 Chaos Elemental | 5 | 1/13,107.2 |
 Chaos Fanatic | 5 | 1/3,542.49 |
 Chasm Crawler (Standard) | 5 | 1/16,384, 3 rolls |
 Chilled jelly | 5 | 1/4,096 |
 Choke devil | 5 | 1/2,048, 3 rolls |
 Cockathrice | 5 | 1/8,192, 3 rolls |
 Cockatrice | 5 | 1/8,192 |
 Colossal Hydra | 5 | 1/16,384, 3 rolls |
 Commander Zilyana | 5 | 1/5,001.85 |
 Corporeal Beast | 5 | 1/5,461.33, 10 rolls |
 Crawling Hand (Level 7) | 5 | 1/8,192 |
 Crazy archaeologist | 5 | 1/3,542.49 |
 Crushing hand | 5 | 1/8,192, 3 rolls |
 Cyclops | 5 | 1/5,461.33 |
 Cyclops (Level 56) | 5 | 1/6,400 |
 Cyclops (Green) | 5 | 1/6,400 |
| Cyclops (Warriors' Guild Basement) | 5 | 1/40,960 |
| Cyclops (Warriors' Guild Rooftop) | 5 | 1/6,400 |
 Dagannoth (Level 74 (1)) | 5 | 1/16,384 |