Boa

Boa is a green-colored snake living in the forest or desert. Not poisonous, but still need to be careful.

Ragnarok Online II
In RO2, there are several variations of this monster:
 * Baby Boa
 * Boa
 * Female Boa
 * Freed Boa
 * Iron Boa
 * Male Boa
 * Poison Boa