Born among the leafy branches, forced to separate from them to live in the water after the great fires caused by Demoblaze helped by humans; GULEAF holds the leaf of Taileaf, The Ecomon who raised him as a parent, who gave it to him, asking to promise to never forget.
He is very shy, also for this reason he learned to blend in both among the foliage and the water, exploiting his dual nature.