From Homestar Runner Wiki
Tofu Homestar first appears in The Luau when Homestar Runner makes a replica of himself so he can sneak away from Marzipan's Luau. Marzipan thinks it is really Homestar. The tofu doppelgänger is also the star of the static Luau themed main page. According to Halloween Potion-ma-jig, Marzipan prefers this version of Homestar to the normal one.