Popsugar Entertainment Netflix Derry Girls Cast Get to Know the Cast of Your New Favourite Netflix Show, Derry Girls 30 August 2019 by Corinne Sullivan View On One Page Photo 4 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Jamie-Lee O’Donnell as Michelle Mallon Jamie-Lee O'Donnell (who previously played Fiona in BBC crime drama Doing Money) returns as resident bad girl Michelle Mallon. Previous Next Start Slideshow NetflixDerry GirlsTV