Mo was born in Miami, Florida. Growing up multi-ethnic was a plus, giving him the opportunity to learn of life outside the United States at a young age. His father was from Lebanon and his mother is a New Yorker of Cuban descent. After meeting director David Anspaugh, who graciously extended him the opportunity to work on his football themed feature film "Rudy", he was hooked. Fulfilling his former passion with his future.
Since then Gallini has worked opposite the likes of Denzel Washington and Gene Hackman in Crimson Tide. James Caan in director Bob Rafelson's HBO original Poodle Springs. James Garner, who he watched as a boy, in a CBS Rockford Files Mow. The legendary Rod Steiger, Gabriel Byrne, and the once in a lifetime experience of fighting Arnold Schwarzenegger in End Of Days. He also worked with the amazing David Lynch on the ABC pilot which became Mulholland Drive. And a leading role in Universal Pictures 2 Fast 2 Furious for director John Singleton. He also has received high accolades for his award winning role in the Pander Brothers film, Selfless. On television Mo has had recurring roles on 24, Chase, General Hospital, and The Young & the Restless. His numerous guest star assignments include CSI:NY, Weeds, N.C.I.S., Shark, The District, J.A.G., The X-Files, Brooklyn South, and Seinfeld. Along with multiple episodes of NYPD Blue, VIP, and Melrose Place.