A Starfleet lieutenant stationed at the Cestus III outpost who was found badly injured in the ruins in 2267 and gave Kirk the only eyewitness account of the Gorn assault.
Lieutenant Harold appears in the episode Arena. When Kirk's party beams down to Cestus III expecting a dinner with Commodore Travers, they find the outpost a field of rubble and Harold lying in the wreckage, burned and in shock.
Beamed to sickbay, he tells how an unidentified ship came in and opened fire, knocking out the base's phasers and pounding it flat. The garrison signalled its surrender and was ignored; there were women and children among the dead.
He also confirms that the outpost sent no invitation to the Enterprise, showing that the enemy had forged it. His testimony persuades Kirk that the raid is the prelude to invasion. He was played by Tom Troupe.