"Since I do rock 'n' roll full-time, I'd say my hobby is... work? What's wrong with that?"

Serval Landau is a playable character in Honkai: Star Rail.

The free and rebellious eldest daughter of the Landau family, once a close friend of Cocolia, her interests has now led her to become a mechanic. In the perpetually winter-stricken Belobog, she opened a workshop called "Neverwinter" that puts business on hold from time to time for rock 'n' roll performances.

(Honkai Star Rail Bot)