Javier "Javi" Grillo-Marxuach ( listen ), born October 28, 1969 in San Juan, Puerto Rico, is a television screenwriter and producer, and podcaster, known for his work as writer and producer on the first two seasons of the ABC television series Lost, as well as other series including Charmed and Law and Order: Special Victims Unit.
Grillo-Marxuach received a BA in 1991 from Carnegie Mellon. While there he was active as an actor, writer and director with Scotch'n'Soda, the theatrical club for non-theater majors that also counts composer Stephen Schwartz, author Iris Rainer Dart and actor Frank Gorshin among its notable alumni. Grillo-Marxuach also wrote a weekly pop-culture column for the campus newspaper, The Tartan.
He has an MFA from USC and (as of 2015) sponsors a fellowship there for MFA students who demonstrate an interest or facility with Hispanic language and culture.