Theron

Theron was an Argolin warlord.

Forty years before the Doctor arrived on the Leisure Hive, Theron began a campaign of conquest starting a very brief war with their neighbors the Foamasi. His ambition all but destroyed the planet and left its people sterile and short-lived.

He may have died in the conflict.

His helmet hangs in the chairman's conference room. (DW: The Leisure Hive)