Shelby

Shelby, also known as Sheldon, was a character seen on a soap opera. He was actually Sheldon's twin, and admitted to Kara that he should have confessed this sooner. Kara was an undercover police officer who had been assigned to arrest him, but she chose to forsake this duty because she had fallen in love with him. It was not clear whether he felt the same way.

Physical appearance
He is consistently a rabbit with a moustache and glasses.

In "Is There a Doctor in the House?", Shelby had white fur. In his Season 16 design, he had brown fur.

Arthur

 * 708b. "Is There a Doctor in the House?"
 * 1601. "Based on a True Story"