- You may be looking for the Arthurian knight.
In the comic book Time Surgeon, Galahad was the home planet of the Chrononauts, such as the Time Surgeon, located in the star system of Karaktakus. (COMIC: Invasion of the Mindmorphs)
Behind the scenes
Galahad is a clear allusion to Gallifrey, home to the Time Lords and the Doctor.