He used to be a good person and and an even better hero alongside ladybug and other miraculous users, but after many unfortunate situations that seemed to mainly effect him he began to resent her and the other miraculous users.

One day on a very strange mission him and ladybug were accidentally sent to an alternate universe where he and ladybug decided to go down a different path a more vindictive and villainous path, the time they spent there he watched how strangely prideful and almost happy his other self was, he wasn’t just some sidekick no in fact he was in his own league instead of just being ladybugs sidekick that always messes things up, it was refreshing seeing a version of himself be more than somebody by ladybugs side, at first he hated the idea of liking the evil version of himself but he noticed his counterpart’s carefree and relaxed attitude, maybe if he had chosen a different path maybe he too would be more relaxed and carefree.

when he and ladybug returned he couldn’t stop thinking about his evil counterpart, what if he acts more like his counterpart, will people finally see him as his own separate hero?

The more he thought about it the more he became angry, how come his evil counterpart gets a better life whiles he’s out saving the world just to get some sub-par life?

I mean what has this city ever done for him? He’s saved countless people no matter how rude or wretched they were, and yet everytime Without fail everyone would be solely focused on ladybugs accomplishments, he couldn’t deny that she was a great super hero but how was he may different? He did all the same things she does.

Thoughts about the words people would use to describe him made him shiver, they called him useless compared to ladybug, they called him nothing but a backup hero that just gets in ladybugs way. So he made the choice to no longer be a hero.

But when he went to ladybug for some reassurance she instead thought it was a good idea to downplay it as a joke, she said that he was taking it way to seriously and people say all kinds of hurtful things everyday, besides it’s not like they are entirely wrong, he does mess up a lot of missions.

she wanted to downplay it as a joke to try and make him feel better but all it did was worsen his mind, he was already struggling with the thought of turning a new leaf but now with her joking attitude making this all seem like it’s nothing really got to him.

In the end he followed the same path as his counterpart and became the main enemy to ladybug.