It all started with 'Eloise' from the tripods (I can't remember her role, only that I wanted the name) then various names from stories followed: Larian, Raven, Mildred... I made role playing games for decades and some of this names also sticked.
Today I am much more modest 😆 and my nicknames mostly are related to my birth name (Simone) like Monetta or Sisi or Mone or to animals (from suricate to naked mole). But I still change names for my art projects.