Question: What is the title of a 2002 American animated science fiction comedy-drama film with an illegally-made, genetically-engineered, extraterrestrial lifeform resembling a blue koala and his adopter and best friend who is also its primary protagonist? 
Sentence (from "Stitch (Disney)"): Stitch (also known by his species name/"birth" name Experiment 626, pronounced "six-two-six") is a fictional character in Disney's "Lilo & Stitch" franchise.
Relevant evidence: No