<Li> Omid Djalili as a Greek customs officer . </Li> <Li> Celia Imrie as the Vice-Chancellor of the university at which Donna, Tanya and Rosie studied . </Li> <Li> Maria Vacratsis as Sofia, a local who owns the shack that Donna stays in, which eventually becomes Donna's home, and Bill's great aunt . </Li> <Li> Panos Mouzourakis as Lazaros, Sofia's son and Bill's cousin who owns the bar at which both his band and Donna and the Dynamos perform . </Li>

Who does maria vacratsis play in mamma mia