Mr. Bat is the first in the Bat series of items in Riviera: The Promised Land. It is obtained only in Lacrima Castle with a quantity of five (x5). Serene is the best user of this item because it will never backfire on her, hits an extra time, and targets all enemies.
Catching Mr. Bat causes the player to miss out on a permanent stat boost for Ein that he can get by killing it instead. (The wings can be given to NaNa in the Magic Guild).