Tippler Character, Teetotaller Actor
Drinks like a fish on screen, but really never touches the stuff.
A character known for having a few or being a plain fat stinking drunk is played by an actor who seldom or never consumes alcohol. A subtrope of Mean Character, Nice Actor and the rummy cousin of a Fake Brit. Examples:
Hello, Unknown Troper. You'll need to get known to lend a hand here.