Treenie is the imaginary friend of Vicita. She speaks in Spanish, but also knows English. She first appeared in Season 11, "Baby Kate and the Imaginary Mystery." She had scheduled a tea party with Nadine, but when she failed to show, Treenie went with Amigo to ask Kate and Pal if they knew where she was. She appeared briefly in "Follow the Bouncing Ball" to tell Alberto that Vicita is telling the truth, although he does not see her. She later appeared in "Fifteen" with Nadine and Uncle Wormy to warn Kate and Pal about the Red Claw.