Soleil Lapierre
From Stunts Wiki
Canadian creator of Stunts Edit, one of the external track/terrain editors, in 1994.
Soleil is also known as Ra, God of Sun in ancient Egypt. This nick seems obvious as "soleil" in French means "sun".
Soleil's Stunts page: https://www.soleillapierre.ca/projects/game_mods/stunts/
