Not The Hero You Want, But The Monster You Need

(Harem Crossover X Male Child Carnitrix User Reader)

Similar to the Ben of the prime timeline, y/n had a similar story but instead of finding the omnitrix, he found the carnitrix. A device that doesn't preserve life, but ends life. As the carnitrix transforms him into 10 monstrous aliens against his own will, but unlike other carnitrixs, he's the only carnitrix user that let's him gain full control of the aliens inside. As we will follow y/n on his journey to accept this life and people who want to help him.