The Sad Kids
From Homestar Runner Wiki
The Sad Kids (a boy and a girl) were created by Strong Sad in Homestarloween Party. They have the same voice, and don't actually say anything except confused statements, such as "Huh?", "What?", and "Weird." They often appear in commercials for Fluffy Puff Marshmallows and Air-Puffed Sugar Delights, which strangely suggests that they live in both the present-day and the 1930s, or have look-alikes. They dressed up as The King of Town and the Wicked Witch of the West for the Fluffy Puff Malloweens commercial.
