Don and Harriet Chapman
From Homestar Runner Wiki
Don and Harriet Chapman are the parents of The Brothers Chaps. Don is a retired chief financial officer of an insurance firm. They help the brothers run their website Store using their ping pong table as a command centre to fulfill order requests during the Decemberween sales rush.
They also seem to have a say, albeit a small one, in what is shown on the site. Marshmallow's Last Stand was temporarily put back on the site after several requests from Don Chapman. (See disclaimer at start of cartoon).
Don, a Catholic, Harriet, a Methodist, have instilled good values in their children. "They were raised in a religious family and have stock in good moral values, but that hasn't stopped them from being uproarious," Don said.