Fairies and a Croc

Rex Atticus, an anthro Nile crocodile, ran away from his home island due to his horrible and tragic past. He landed on Fiore after destroying a dark guild in another country. He meets up with Team Natsu and Master Makarov who gives him his chance for redemption by joining Fairy Tail. Can he redeem himself with their help or will his past drown him in the darkness within his soul?