Fomalhaut

Also goes by Mal

Mascot character, very self-indulgent design and personality.

A human volunteered to be a test subject, and was turned into a weapon. Broke free and now lives in isolation.

Scary on the outside, very sweet and nice on the inside

Named after "the loneliest star" https://earthsky.org/brightest-stars/solitary-fomalhaut-guards-the-southern-sky