Mittens was a cat of Bowser, However, Bowser accidentally ran her over. So he cremated her and put her ashes in a jar. The cat is the main cause of Bowser Junior going to Military School because Bowser Junior breaking the jar was the last straw before Bowser sent Junior to Military School.
- She is the second SuperMarioLogan pet to be dead/cremated, the first being is Crusty from Bowser Junior's Pet!, which in that episode, Crusty died with water contact.
- She is the second character to not have a speech, first being Joseph's Girlfriend.