This character is from ADGTH series, she first appeared in the episode Bess and Itchys school reunion where Tiffany is the most popular dog in the school and wants to maintain that position throughout the evening, she seems to take a liking in Itchy, and pulls many pranks on him in return for Charlie's pranks to try to make a fool of her in front of her old class mates and boyfriend Jeremy. She is mean to Bess and was the whole way through the episode.

 But near the ending Tiffany realizes how selfish and big headed she has been and apologized to Itchy and Bess.