Mittens is a female tabby kitten who only appeared in "Catcalls". The Kennel Kittens brought her to Becky's brother (Who briefly renamed her "Stripe" despite the fact that she doesn't have any stripes at all), while the Pound Puppies brought Becky a puppy named Wagster. She is voiced by E. G. Daily.
Mittens was first seen on her and Wagster's perfect person's front porch with Ace, Lucky and Wagster, asking Ace nervously if he and Lucky were going to fight. "You guys aren't gonna fight are you Ace?" Ace told her not to worry.