Sebastien was a member of the Resistance and an associate of Sean Renard. He first appeared in "Quill".
Appearances
Grimm
Guest cast, played by Christian Lagadec
- Episode 2x04: Quill (Sep 3, 2012)
- Episode 2x05: The Good Shepherd (Sep 28, 2012)
- Episode 2x10: The Hour of Death (Nov 2, 2012)
- Episode 2x13: Face Off (Mar 8, 2013)
- Episode 2x16: Nameless (Mar 29, 2013)
- Episode 2x21: The Waking Dead (May 14, 2013)
- Episode 2x22: Goodnight, Sweet Grimm (May 21, 2013)
- Episode 3x01: The Ungrateful Dead (Oct 25, 2013)
- Episode 3x03: A Dish Best Served Cold (Nov 8, 2013)
- Episode 3x04: One Night Stand (Nov 15, 2013)
- Episode 3x05: El Cucuy (Nov 29, 2013)
- Episode 3x07: Cold Blooded (Dec 13, 2013)
- Episode 3x08: Twelve Days of Krampus (Dec 13, 2013)
- Episode 3x12: The Wild Hunt (Jan 24, 2014)
- Episode 3x13: Revelation (Feb 28, 2014)
- Episode 3x15: Once We Were Gods (Mar 14, 2014)
- Episode 3x16: The Show Must Go On (Mar 21, 2014)