Mitai Leo Saussay is a Thai-French actor, host and singer managed by GMMTV. Leo graduated with a bachelor's degree from the faculty of humanities at Ramkhamhaeng University (French program).

Leo entered the entertainment industry as a singer in the boy band B.O.Y (บี-โอ-วาย) formed by "James" Ruangsak Loychusak. Other members included "Tengnueng" Kanist Piyapaphakornkoon, "James" Kitkasem McFadden, and "Mouse" Natcha Janthapan.

Since 2009, Leo has been in a relationship with singer-actor "Chacha" Arita Ramnarong.