R.R.

R.R. is a character from Superstars, Sponges, Cephalopods, and Squirrels. He was first shown in the episode "Complete" when he broke up with Sandy, who also premiered in it. Since then, he has been shown to be devoted to destroying SSSCS.

Appearance
Not much is known about him, except he is a gray squirrel.

Personality
R.R. likes to seek revenge. He's done what he could to try destroying the band Sandy is in. He is also very mysterious, and he can play multiple instruments. He owns a music store called "RR Instruments". No one on the show except Sandy knows what R.R. means. And he's very mean.