Derek is the less-attractive brother of Eric. He only appears in TUFF Sell and is voiced by Rob Paulsen.

Physical Appearance

Derek is a haggard and unattractive cat who is wearing the same uniform as Eric but with glasses, a bowtie, and a hat.


When Snaptrap bought T.U.F.F, he replaces Kitty's Love Interests Eric with his brother Derek in order to make Kitty feel miserable, as she wore a different outfit to impress him.


  • It is assumed that Derek is Eric's younger brother as D in his name is before E in Eric's name.
  • If Eric Marry Kitty, Derek will be his Future Sister-in-Law.
Community content is available under CC-BY-SA unless otherwise noted.