Behemoths are a race of large, powerful creatures mostly found in Daemonheim. They were brought to Gielinor from another plane by Bilrach during his experiments with portal magic and are usually featured as the final boss in a Dungeoneering floor. Certain behemoths drop Behemoth Notes, which give more background on their race.
Behemoths can attack with all three styles of the Combat triangle and have special mechanics, like the Gluttonous Behemoth's ability to eat and heal itself. Pet versions of some behemoths can also be bought from either the Rewards Trader or Solomon's General Store.
There are currently only six species known:
- Gluttonous behemoth
- Bulwark beast
- Runebound behemoth
- Hope devourer
- Hope Nibbler, a pet version of the Hope devourer.
- Zamorakian siege beast
- Warborn behemoth, a pet version of the siege beast.
- In the Three's Company saga, the villain Carn has managed to hypnotise a Gluttonous behemoth.
- The only behemoths to appear outside of Daemonheim is the Zamorakian siege beast, the Warborn behemoth and the Hope Nibbler.