(written from a Production point of view)
Henry Masao Kingi, Jr. (born 3 June 1970; age 45) is a stuntman and stunt actor who served as stunt double for Alexander Siddig in several episodes of Star Trek: Deep Space Nine and portrayed background stunt characters as well. More recently he performed stunts as a Romulan crewman in J.J. Abrams' Star Trek.  Kingi received no credit for his performances. According to the IMDb, Kingi, Jr. is currently also performing stunts on the Star Trek Into Darkness.
Kingi was born in Los Angeles, California and is the son of stuntman Henry Kingi, Sr.. His former stepmother was actress Lindsay Wagner, and he has two half-brothers, Alex Kingi and stuntman Dorian Kingi. He was nominated for two Taurus World Stunt Awards (2004 for best high work in Bad Boys II with Jeff Cadiente and Denney Pierce and 2007 for best car stunt in Deja Vu) and has won another for outstanding achievement in stunts (2004). He has doubled for actors such as Antonio Banderas, Terrance Howard, and Jason Scott Lee.
Among his stunt resume are films such as Tango & Cash (1989, with Teri Hatcher), Stop! Or My Mom Will Shoot (1992, with Marjean Holden), The Bodyguard (1992), Demolition Man (1993, with Bob Gunton, Bill Cobbs, Mark Colson, Tracee Lee Cocco, and stunts by Sandy Berumen, John Cade, Mark De Alessandro, Gary Epper, Randy Hall, Dana Hee, Kane Hodder, John Meier, and Rita Minor), Double Dragon (1994), Desperado (1995), Eraser (1996, with Vanessa Williams), Dante's Peak (1997), Blade (1998), I Still Know What You Did Last Summer (1998, with Jeffrey Combs, Benjamin Brown, Bill Cobbs, and stunts by LaFaye Baker, Jophery C. Brown, Jennifer Caputo, and Freddie Hice), The President's Man (2000), Bedazzled (2000), Pearl Harbor (2001), The Scorpion King (2002, with The Rock and Branscombe Richmond), Austin Powers in Goldmember (2002, with Clint Howard, Kelly Cooper, Angela Meryl, Roger Morrissey, Dan Warner, and stunts by Charlie Brewer, Alex Chansky, Phil Chong, Andy Gill, Kim Koscki, Gail Monian, and Pat Romano), Bad Boys II (2003), Hidalgo (2004), The Aviator (2004), The Island (2005, with Ethan Phillips and stunts by Spice Williams-Crosby), Poseidon (2006), Pirates of the Caribbean: Dead Man's Chest (2006, with stunts by Tom Morga, Lisa Hoyle, Tony Angelotti, Mark Aaron Wagner, and Theo Kypri), Norbit (2007), and Once Upon a Time in the Hood (2007).
Kingi has also performed stunts in television series such as A Man Called Hawk (starring Avery Brooks), Profiler (1999, with David Cowgill and Gary Kasper), V.I.P. (2001, with Musetta Vander), Angel, Boston Public (with Jeri Ryan), She Spies, Boomtown (starring Neal McDonough), 24 (2005, with Ned Vaughn), and Shark (2007, with Ryan again, and Michael Buchman Silver).
Star Trek appearances
- DS9: as stunt double for Alexander Siddig