- Played drums for the Dublin-based rock band Light a Big Fire.
- Wrote, directed and produced the 2001 thriller Room 101.
- Along with his father, actor William Morgan Sheppard, lent his voice to the video game The Conduit.
- William Sheppard — Son
- Max Sheppard — Son
- William Morgan Sheppard — Father
- Jessica Sheppard — Wife
- Birth Name: Mark Andreas Sheppard
- Birth Place: London, England
- Profession: Actor