Henry Crabgrass

 is a patch of crabgrass near Mollymauk Tealeaf's grave, who temporarily achieved sapience when Jester talked to them using Speak With Plants through the Charm of Plant Command. They are a cluster of crabgrass roots that encompass a hive crabgrass mind.

Under the Speak With Plants spell that Jester cast through the Charm of Plant Command, Henry told the Mighty Nein that a group of people came and dug up Mollymauk Tealeaf's body, and that there was "a lot of chanting" involved, but did not know what language it was because Henry did not know any languages. They also conveyed approximately how long ago this event occurred.

Trivia

 * The cast started making jokes using Henry's voice and name, with Henry acting as an advocate for getting consent before snuggling: "Henry the Non-Grab-Ass Crabgrass."