The Grassmen are one of the longest-living clans. Emotionless and guided only by logic, they travel the world when they are young gathering as much knowledge as possible and transform into wise trees in their old age.
Grassmen have the ability to communicate with plants and like the Forest Clan, they can easily transverse through forests. Grassmen are also incredibly long lived easily outliving members of other clans.
Unlike other clans, Grassmen do not live in villages or in any sort of group. Grassmen travel around the world gaining as much knowledge as possible until they become adults. Once a Grassman reaches adulthood they become a tree, unable to move ever again.
- Grassmen don't seem to have any sort of set genders. While some can be "identified" to a particular gender, such as Peco, who is often called a "he", their exact gender is questionable. Spar is a good example, as while Spar generally appears to be a "male", Spar can transform into a female-like form through the Shaman system, which questions if Grassmen as a whole have any form of true genders or not.