In recent years, he has shone at Het Zuidelijk Toneel under Sarah Moeremans direction, playing a hopeless admirer in Mission Molière and a non-conformist in the critically acclaimed production Crashtest Ibsen (2023). Since joining the permanent ensemble, Gillis has appeared in Holly Goosebumps, Offline Tourists and Not Quichot.
This summer, Gillis threw himself wholeheartedly into his role as Big Boss Boomer Ruurd in the festival production Boomer Galore. This season, you can see him in This will not end well, Silence of the Dogs and Vondels Angels.














