Since graduation from Aberystwyth university her career has seen her act on stage, tv and radio.
TV Credits include hit comedy Tourist trap(with Sally Phillips), Mabinogi-ogi, Chwarter Call and Elis James: Nabod y Teip as well as dramas such as 35 awr, Pobl y cwm and Rownd a Rownd.
Last year she performed on stage in the National Eisteddfod in the theatre show Rhybydd Iaith Anweddus written and starring the author Llwyd Owen.
Mari was also featured in the successful BBC Radio Wales comedy Foiled written by Beth Granville and David Charles which also starred Miles Jupp.
Recently, Mari co-created, wrote and starred her first series, a bilingual black comedy called Merched Parchus which is currently airing on S4C.