From BZPB Wiki

Arimasu is a Great Being and a Guardian of Subnixus.

In Subnixian legend, she is the Sun Guardian, who thinks of the Soul Knights as her children. She is also said to be a mere 23 years old, with radiant skin and hair, although nobody on the surface has ever seen her properly. She stands watch over the planet from behind the sun, and uses its rays to imbue armour and weaponry that belong to the Soul Knights with additional power.

Council of the Great Beings
Original UniverseShattered Mirror UniverseRetelling Universe
Chairperson Current Ganos Lal
Former AngonceTPK
Council of the
Great Beings
Current Members ArchyuraLudwigMaster Big Star
Former Members ArceusArmitageBubblesCoroGene SimmonsHeremusHurielLamatiaLuigiMerlinMichael WestonNajuOuandisOrlinSeraphimonSerecioSM TeridaxTrahiiVelika
Other Great Beings ArimasuMaViruelWalternateWekith