Thannik's Thunder was a Ghtroc Industries 720 light freighter operated by a female Human pilot named Rhen. She flew the freighter in combat against pirates flying Z-95 Headhunters, and against Imperial TIE fighters.[1]
Behind the scenes
No connection between Thannik's Thunder and Rhen's associate, the bounty hunter Thannik, is explicitly stated in Star Wars: The Roleplaying Game, Second Edition, Revised and Expanded, the only source for this ship.[1]