Digimon Digital Monsters!

Digimon are Digital Monsters who live in the Digital World. Therefore they are Digital but not just computer data, they are living things. A boy in 5th grade did not know that Digimon were real, he thought they were a bunch of computer data, and therefore he became corrupt and abused Digimon. After realizing he was corrupt and hurting real live animals he was depressed and after a while he got over it and joined the people who made him realize what he was doing although the journey didn't stop there.

Here's a picture of a Digimon.
This Digimon os amazingly powerful and if you see the episodes he is in you will know why.