Blond hunk

His character's name in the movie was "Chuck" so I'm pretty sure Chuck Pennington is the hunk in question. He clearly wasn't an actor and for that reason was given very few lines (which is quite an achievement considering he was one of only five characters that survived the entire movie while about half-dozen others were gobbled up by one critter or another). He was obviously the beefcake factor in the movie, which is why he went almost the entire movie shirtless, another amazing achievement. For my money, he was the best thing about the movie :~).