オロバス
A demon which can be found in numerous games within the Shin Megami Tensei series.  Slight popularity has increased for this demon due to its humorous pose.

In Persona 3's Tartarus Theatre, the pose was used for comedic purposes aimed at fans of the series.  A very similar pose can be seen done in episode 12 of Code Geass R2.

http://en.wikipedia.org/wiki/Orobas

The below link is of the Orobas seen in the Shin Megami Tensei series.

http://megamitensei.wikia.com/wiki/Orobas
orobas (megami tensei)