Usaru-san
Type: Special, Episodes: 4
Aired: Oct 3, 2009 to Oct 10, 2009
Studio: OLM
Source: Other
Rating: PG - Children
Synopsis:
The Media Factory mascot character franchise revolves around a male rabbit that transforms into Usaru-san by wearing a monkey costume and eating bananas. The title “Usaru-san” is a portmanteau of “usagi” (rabbit) and “saru” (monkey).

(Source: AniDB)