Marzi-Mei

From Homestar Runner Wiki

20X6 Marzipan is the 20X6 version of Marzipan. She only appears on Main Page 17 as the mouse-over action on the "characters" button, where she says "Yatta!" and does the victory sign. The animation she does is identical to Chun-Li's winning pose in Street Fighter II, as is the "Yatta!". ("Yatta!" is a Japanese interjection for excitement, usually translated into "Hooray!" or "I did it!"). Unlike present day Marzipan, 20X6 Marzipan has arms.

Her outfit, hairstyle and general appearance seem to be based on the anime character Sailor Moon.