User blog comment:PhineasxIsabella/Phineas and Ferb Trivia/@comment-2217944-20100730173412

Ok, ANSWER TIME:

The first two are both true and the third one is Motor Oil and Confidence.

P.P. Otter doesn't sound like Gantu from Lilo and Stitch, but his voice actor played that character. As for Olivia, the show is called "Adventure Time with Finn and Jake" and her character is Marceline the Vampire Queen.