Uno. The Incredible Friend

Uno is the most unusual student in school. First of all, no one knows what kind of creature he is. Secondly, he has a ton of incredible abilities: he can stretch his arms and legs (and even teeth), become invisible, change color, and even grow gills. All his classmates are, of course, thrilled with their incredible friend and his amusing antics!
One day, Uno decides to use his amazing skills not just for fun, but to do good and protect the weak. And he becomes... a real superhero! What awaits the brilliant Blue Ranger? After all, between feats, he still needs to find time to study...