Since When Does McDonald's Have A Goony Looking Knight Character?
They don't, but it sure does look like a character from the the McDonaldland cast of characters, doesn't it? McDonaldland was the magical home to milkshake volcanoes and apple pie trees, and Ronald McDonald and his product tie-in pals would have adventures. This all-over "magical place" concept from 1971 earned Mickey D's a lawsuit from Sid & Marty Krofft (but that's a story for another time), but not before Burger King could create their own cholesterol carting cast of characters a few years later.
The Burger King Kingdom feature a ring-twirling magical monarch, the skeptical Duke of Doubt who didn't believe in magic, and Sir Shakes-A-Lot… immortalized here in drinking glass form. He was a knight made up of stacks of Burger King paper cups, and he consumed so many shakes it rendered him permanently cold. The Kingdom concept was phased out by the late 80's, but you've probably noticed that the Burger King character is back in an ironic web 2.0 version since 2003, now as a disturbing glossy-masked character. I hope they don't create a creepy Sir Shakes-A-Lot too, unless he's portrayed by Sir Mix-A-Lot, of course.