Farmer Gricoller was the author of Farmer Gricoller's Farming Manual. Gricoller was apparently an experienced horticulturalist, as his or her work dealt with various methods of enriching crop production primarily through fertilisation. Unfortunately for him, his encounter with My Arm ultimately led to him being devoured. During My Arm's Big Adventure, players use Gricoller's manual to help grow Goutweed on the roof of the Troll Stronghold east of the Fremennik Province.