<Li> Ferguson and Alfonso (voiced by Nate Torrence and Matt Chapman)--Marco's two friends at Echo Creek . Ferguson has orange hair and enjoys making belly faces . Alfonso has curly hair and wears glasses . They appear mostly in early episodes of season 1, and only appear in one season 2 episode as off - screen voices . </Li> <Li> Miss Skullnick (voiced by Dee Dee Rescher)--Star and Marco's homeroom and math teacher at Echo Creek Academy . She is accidentally turned into a troll by Star in the episode "Match Maker" and then retains her form for the remainder of the series . Her given name is Margaret . </Li> <Li> Jackie Lynn Thomas (voiced by Grey Griffin)--A skateboarding classmate who has been Marco's crush since kindergarten . She and Marco start dating in the season 2 episode "Bon Bon the Birthday Clown ." </Li> <Li> Dojo Sensei (voiced by Nick Swardson) - The unnamed sensei at the dojo that Marco attends . </Li>

Who voices jackie in star vs the forces of evil