The Legendary Pokémon, Solgaleo and Lunala, have their own servants to help them take custodial care of the cosmos. These servants are the Sun & Moon Disciples, respectively.

The Disciples are created through the use of magical masks & rubber space suits that attach to a host like a parasite. Compatible hosts are assimilated and their personalities suppressed or changed to become a loyal servant to their respective master until they are released, at which point the host has little to no memory of the entire ordeal. Sun Disciples are designated and named after stars or constellations, while Moon Disciples take the names of moons and other celestial bodies.

Arcturus has taken Anuhe the Sylveon as his host. The times when Arcturus forces control and a transformation are uncommon, and only in response to Solgaleo's summons. While in service to the legendary Pokémon, Arcturus normally spends his time hunting other potential recruits to turn them, and running quests in Mystery Dungeons for a greater purpose that serves his master's plans. Otherwise, you will find him among the stars being a little space gremlin.

*Featured character illustration was drawn by me~