Fellinis is a cat-shaped alien. Unlike Puddles not totally identical appearance of any land animal and has the ability to speak. It's dangerous, intimidating and very agile, managing to avoid Friday's multiple shots and escape the Protectors' HQ.
It appeared For the first and only time in Episode 21 which got detected by Friday at school and got trapped by both Friday and Braianna. It was held captive in the headquarters but manages to escape. It appeared in the "Braianna's Pet Party" and got caught again.
It and Gelatina are the only aliens who has escaped from Protectors' HQ.