Mr. Purple is Cat's purple giraffe stuffed animal who appeared in The Gorilla Club. He is one of three stuffed giraffes to appear in Victorious, the other two being Kenan Thompson's stuffed giraffe which he gave to André, and the second being Mr. Long-Neck. When Tori got angry at Cat for calling her acting bad, she took Mr. Purple and threw him out the window, causing Cat to chase after him, yelling his name. However, Mr. Purple appears again in The Blonde Squad, as he is seen on Cat's lap when Robbie sings I Think You're Swell to her. He appears again in One Thousand Berry Balls after Robbie kisses Cat and she runs away from him. He is seen in the front of her bike. Mr. Purple has also appeared in one of Cat's Random Thoughts videos.
What Mr. Purple is to Cat is similar to what Rex is to Robbie. Rex and Mr. Purple are "inanimate" objects that Robbie and Cat have a sentimental attachment to.