Stitch

Stitch is a fictional character in Disney’s Lilo & Stitch franchise. An illegally-made, genetically-engineered, extraterrestrial lifeform resembling a blue koala, he is one of the franchise’s two title characters, alongside his human adopter and best friend Lilo Pelekai, and its most prominent protagonist.

https://en.wikipedia.org/wiki/Stitch_(Disney)