"The Conquistador" was the self-styled title of a young homeworlder who was trained for combat in the War in Heaven. During their training they were told that one potential identity of the Enemy was Tardigrades. (PROSE: The Short Briefing Sergeant's Tale [+]Loading...["The Short Briefing Sergeant's Tale (short story)"])
They were one of the examples provided by the Fifteenth Doctor when he explained to Ruby Sunday about the Time Lords' exclusive usage of vocational names. (TV: Space Babies [+]Loading...["Space Babies (TV story)"])