Yarnball is Jester's moorbounder. As an NPC, Yarnball is played by Matthew Mercer.



A younger and somewhat "special" moorbounder, Yarnball seems interested in food and little else. Its eyes blink at irregular intervals.


Yarnball was bloodthirsty, violent and extremely aggressive as one might expect of an apex predator, although it was somewhat gentler in its interactions with Jester, with whom it had formed a strong bond.



Yarnball was raised by Zorth, a goblin who trains moorbounders for a living in Asarius, the City of Beasts, in Xhorhas. He was bonded to and trained by Jester.[1]

"Wood and Steel" (2x58)

Moorbounders are voracious eaters and are not cheap to maintain as they require food every day, unlike many predators. However, they are also rather independent and do not need to be restrained when traveling with the group as they hunt for themselves at night, returning to the camp to rest once fed. They also provide extra security, as demonstrated when the Mighty Nein awoke one morning to find their mounts feeding on a large wolf that had ventured too close to the camp.[2]


  • Jester: Owner/rider.
  • Jannik: Caleb's mount and part of the hunting pack.
  • Clarabelle: Caduceus' mount and part of the hunting pack.


  1. See "Cornered" (2x53).
  2. See "Wood and Steel" (2x58) at 3:04:45.


  1. Fan art of a Moorbounder, by Anna Molla (source).  Used with permission.
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