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Is a prolific creator of television, movies, comic books and interactive media.  

Though best known as one of the Emmy Award-winning writer/producers of "Lost," and for creating the comic book and ABC Family television series “The Middleman,” Grillo-Marxuach currently co-executive produces the upcoming third season of the hit CW series "The 100." 

In addition, Grillo-Marxuach is co-host and co-creator (with fellow writer/producer/Puerto Rican, Jose Molina) of the Children of Tendu podcast, an educational series which aims to teach newcomers how to navigate the entertainment industry with decency and integrity.

After graduating with a B.A. in creative writing and cultural studies from Carnegie Mellon University and earning an M.F.A. in screenwriting from the University of Southern California School of Cinema-Television, Grillo-Marxuach began his career as a Primetime Series executive at NBC, working on current shows and drama development. 

His television work as writer/producer includes the Emmy, Golden Globe, Writers Guild and Television Critics Association Award-winning, American Film Institute honoree “Lost,” and “Boomtown” - which was also honored by the American Film Institute, earned George Foster Peabody and TCA awards, and was nominated for the Golden Globe, as well as "Helix," “Charlie’s Angels,” “Medium,” “The Pretender,” “Charmed,” “The Chronicle,” “seaQuest” and “Jake 2.0."

Grillo-Marxuach has also written scripts for “Law & Order: Special Victims Unit,” “The Dead Zone” and “Dark Skies,” sold pilots to CBS, ABC, NBC, Fox, The WB, The Sci-Fi  (and SyFy) channel, and TNT.  

Further work includes feature film rewrites for The Weinstein Company, and Michael DeLuca Productions, an adaptation of the Brian Wood Rob G. graphic novel “the couriers” for Intrepid Pictures, as well as short films, music videos and several works for the stage.

Concurrent to his work on “Lost,” Grillo-Marxuach worked as a producer and performer on “The Lost Experience,” a Clio Award-winning multi-media interactive game that explained the mysteries of the television series over a series of web pages, blogs, podcasts, internet videos, television commercials, radio broadcasts, newspaper and magazine articles, live events - and even a best-selling novel.

In addition to four full-length “The Middleman” graphic novels, Grillo-Marxuach wrote the mini-series “Annihilation: Super-Skrull” and “Annihilation: Conquest - Wraith,” for Marvel as well as “Cylon Apocalypse,” a comic mini-series based on the classic “Battlestar Galactica” TV series for Dynamite Entertainment.

Javier Grillo-Marxuach was born and raised in Puerto Rico. His name is pronounced "HA-VEE-AIR GREE-JOE MARKS-WATCH."