For this reason, they are considered a Tyranid vanguard unit. Currently, a large number of Mahir Leapers reside within the Xenos Bestiarium of Watch Fortress Erioch, where their threat level is considered to be indigo.
The Mahir Leaper is believed to be derived from Gaunt specimens that arrived on the planet in mycetic spores or even possibly aboard a crashed ship. The creatures have adapted to local conditions by becoming smaller and more agile, compensating for their lessened strength with increased numbers and a hardened carapace.
A hunting pack of Mahir Leapers can be up to sixty strong and well able to take down the largest prey. The Xenos Bestiarium maintains a substantial breeding stock of Mahir Leapers for use in the Hunting Grounds.
Deathwatch Battle-Brothers find that the fast moving, hard-shelled leapers make for excellent target practice.
- Deathwatch: Rites of Battle (RPG), pg. 243