From Wikipedia, the free encyclopedia. Maurissa Tancharoen Whedon (born November 28, 1975 in Los Angeles, California) is an American actress, singer, dancer, television producer/writer and lyricist Career She co-wrote Dr. Horrible's Sing-Along Blog and appeared onscreen as Groupie #1, as well as on the DVD audio track "Commentary! The Musical", in which she sings about the scarcity of non-stereotyped roles in television and film for actors of Asian origin.She was a staff writer and story edit ...