1-Up
From Homestar Runner Wiki
1-Up is Homestar Runner's 20X6 counterpart. Everybody says Stinkoman's the guy, but 1-Up wants to be the guy, too. However, he is often squished by Pan Pan, usually to Stinkoman's great delight. His relationship with 20X6 Marzipan is unknown.
This character's name wasn't revealed until Stinkoman 20X6 debuted.