So this is my design for a villain luka. I'm working on a one shot for his story but basically he becomes Aglais (scientific name for the peacock butterfly) when Adrien takes the miraculous and makes the wish, which messes up Luka's life. He is a villain with a purpose. He intends to undo the wish Adrien made.
Adrien's wish was made up of three things. One, his mother been alive, two his father not been hawkmoth and three ladybug forgetting the world before so she will love him. The price that is paid is Luka's mother is in a coma, Jagged is arrested as Hawkmoth (in this Jagged isn't a bad dad) and Juleka remembers the previous world but it drives her to suicide as she thinks she's mad. Luka regains his memories after her death and finding the miraculous. Nooroo and Duusu explain to him about the wish and he realizes that Adrien causes it so he resolved to undo the wish while taking Adrien down. Luka was also dating Marinette in the original timeline and is upset the she doesn't remember him and that adrien would take away her memory just so she would date him.