William Campbell

Character actor par excellence -- via Memory Alpha. Starting with small roles in big pictures such as "The High and the Mighty" and bigger roles in a score of B-movies, including Westerns, war films, prison movies and the like, he made a run in a number of grade-Z horror flicks that later became cult favorites -- "Dementia 13," "Blood Bath" and "Portrait in Terror."

He scored big with two distinctive roles in the original "Star Trek" TV series -- as Trelane in "The Squire of Gothos"

and Koloth in "The Trouble with Tribbles."