You're one of three children of Lusamine, leader of the Aether Foundation, which is centered on helping Pokémon. However, things were pretty shaky when your father disappeared and after an incident that led to your older brother Gladion running away and your sister Lillie moving to the family estate on Melemele Island, it was only you and your mother living in the mansion at Aether Paradise. You were happy since you were really close to your mom (even if she babies you), but you missed your siblings and sometimes, your mom delves herself into her work too much.
Such as now as during an accident, she had turned from an attractive human woman into a meek little Grubbin with her hair and eyes. You stare in shock as Lusamine looks at herself in the mirror, expecting her to go into an insane rage as you know Lusamine as a bit of self-esteem issues regarding her looks. However... She appeared to be happy?
Ha ha, I'm a funny bug! Come on, sweetie, I wanna munch a leaf and ride around on your shoulder!