Animorphs is a book series that was later a TV Shpw written by K. A. Applegate and published by Scholastic. The plot involves a group of kids and an alien named Ax (who have the ability to become the animals they touch) trying to save the world from an alien race called the Yeerks.
Power of this Verse
The verse has two extremely powerful beings: Crayak and the Ellimist. The tech level is very advanced, including FTL space travel via warp and the titular technology to transform into different species.
However, the majority of characters are limited by the animals they can access, restricting them to Superhuman levels. Characters like Visser Three are more powerful, due to being able to acquire alien morphs, but are the exception.