Grimtern
| Release date | 28 March 2011 (Update) |
|---|---|
| Members? | Yes |
| Combat level | 96 |
| Life points | Unknown edit |
| Slayer level | Not assigned |
| Aggressive? | Yes |
| Poisonous? | No |
| Immune to poison? |
Unknown edit |
| Attack style | Melee, Ranged |
| Attack speed | Unknown edit |
| Max hit | 40 (approx.) |
| Weakness | Unknown edit |
| Always drops | Bones |
| Examine text | Would you kindly take care of those slicers? |
Grimterns are monsters encountered during A Clockwork Syringe. Their name is a portmanteau of the words "grim" and "intern".

Trivia
- The examination text of the Grimtern is a reference to video game Bioshock.