Mark E. Fenlason (born 20 June 1966; age 59) is a model maker, special effects makeup artist, set dresser and special effects artist who worked as prop fabricator, set dresser and model maker on the Star Trek: The Next Generation seventh season episode "All Good Things..."
Fenlason started to work as model maker, leadman and prop person in the late 1980s when he worked on projects such as The Abyss (1989), Solar Crisis (1990), Flight of the Intruder (1991), Future Kick (1991), Red Shoe Diaries (1992), and Amityville: It's About Time (1992). He also worked in the art department of Earth 2 (1994), Tank Girl (1995, starring Lori Petty and Malcolm McDowell), Dante's Peak (1997), Honey, I Shrunk the Kids: The TV Show (starring Barbara Alyn Woods and Thomas Dekker), Titanic (1997), the science fiction film The Sender (1998), Shadow Puppets (2007), The Perfect Sleep (2009), and Deadliest Warrior (2009).
His credits as special effects artist, coordinator or supervisor include Titanic (1997), Hard Rain (1998), the television series Live Wire (2004), Special Dead (2006), Americanizing Shelley (2008), the horror thriller Hangman (2009), Killer by Nature (2010, starring Ron Perlman), the short drama The Tesla Project (2011), the comedy The Polterguys (2012), and Roadside (2012).
In addition, he worked as special effects makeup artist and production designer on several films including the comedy Her Morbid Desires (2008), the horror film The Dead Undead (2010, with Spice Williams and Edward Conna), and the science fiction film The Pod (2012, written and directed by Edward Conna).