Re: Astros?
The famous Mars Brothers, Cosmo, Astro and Taiko[1]. Fondly remembered for their work on the ISS in "Flywheel, Thruster and Flywheel"[2] and the famous IMAX film "A Night in the Orbit".[3]
[1] plus the boring one whose name nobody ever remembers - and the other one, remembered only by real fans, who never made it to a successful mission.
[2] although only Cosmo and Astro had major roles in this.
[3] a later film, to be called "Go West", was cancelled due to technical difficulties when it was pointed out they'd have to reverse course.