Pansage appears to be a small, green monkey with a yellowish-khaki chin, arms, and chest. It has green legs and tail, which has a pair of small leaves on its tip. The insides of its ears are light green and it has a tree-like appendage atop its head. This "tree" has 3 teardrop-shaped yellowish-khaki marks on it.
Pansage was first seen together with Axew as a toy featured in two images seen in July 2010, but its existence was not yet verified. In the beginning of August a fake leak of the September issue of CoroCoro showed its own version of this Pokémon. Pansage was officially revealed August 22, 2010 by Pokémon Sunday.