Born and raised in London. Gatt first got the acting bug when his Maltese parents took him to see Star Wars at the age of 8 and he decided to be Han Solo when he was older. He began his professional training at Sylvia Young Theater School and then followed that with a 3 year acting and music theater course at the Mountview Academy of Theater Arts, graduating with a degree. He has a brief stint in the British Royal Marines. 

He quickly found work in the West End, starring in productions including "Miss Saigon" and "Jesus Christ Superstar." After moving to the U.S., he immediately booked a lead role in the thriller feature, "Pulse," opposite Kristen Bell.

Gatt is perhaps best known as the motion capture performer and likeness for 'Kratos' from the acclaimed "God Of War" video game franchise as well as the voice of 'Lord Scourge' in the hugely popular "Star Wars: The Old Republic." He most recently (2011) appeared as the Frost Giant villain, 'Grundroth' in Marvel's box-office smash "THOR," and will next been seen portraying humanoid Starfleet 'Science Officer 0718' in the highly anticipated sequel, "Star Trek Into Darkness" from J.J. Abrams.

Additionally, Gatt's notable television guest star credits include NBC's "Chuck," Fox's "Breaking In," Adult Swim's "Eagleheart," David E. Kelley's "Wonder Woman" pilot for NBC and a fan-favorite recurring arc on Cinemax's new (2012) hit series, "Banshee."

He resides in Los Angeles.

Gatt has a condition called alopecia universalis which made all of his hair fall out at the age of 14.

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Trivia

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When I first met my girlfriend, Mercy Malick, she asked me if there was anything I should tell her that could put her off me if she found out later. So I told her that I was a total 'Star Wars' geek and had boxes of 'Star Wars' toys in storage.
I wish that every director was as interested in doing as much in camera and with physical objects as much as possible as J.J. Abrams is.
I love to listen to lots of different genres of music, but mostly movie soundtracks and music theater.
Yep, I'm a geek. Ever since I got the Millennium Falcon for Christmas in 1978. And I still have it, in perfect condition, just without the box... but I still play with it!