A towering, taciturn Klingon whose shuttle is stopped by the Enterprise-D in 2370 because he is carrying a piece of an ancient Vulcan weapon for Arctus Baran's mercenaries.
Koral appears in Gambit, Part II in the seventh season. He is a courier hired to bring one of the fragments of the Stone of Gol to a rendezvous with Baran's ship. Picard, undercover among the mercenaries, gets word to the Enterprise, which intercepts the shuttle first.
Data, in command, has no legal reason to search a Klingon vessel, so the crew stall. Koral is invited aboard and treated as a guest, answering nearly every approach with silence, while Worf and Beverly Crusher find pretexts for a health and safety inspection.
The artefact is found, and Koral's part ends there. He was played by James Worthy, the Los Angeles Lakers basketball player, whose height makes him one of the tallest Klingons seen on screen.