Son of special visual effects pioneer Gene Warren, who died in 1997. Visual effects supervisor who entered American film as an uncredited special effects artist for BLACK SUNDAY (1977). Other notable vfx credits include THE TERMINATOR (1984), NIGHTFLYERS (1987), THE ABYSS (1989), GOING UNDER (1990), BRAM STOKER'S DRACULA (1992), NEMESIS and FREAKED (both 1993), THE SHADOW (1994), JOHNNY MNEMONIC and STRANGE DAYS (both 1995), "The Beast" (1996, TV mini-series), EDEN and SNOW WHITE: A TALE OF TERROR (both 1997), ARLINGTON ROAD and ORFEU (both 1999), THE 6TH DAY (2000), THE MOTHMAN PROPHECIES and JOHN CARPENTER'S VAMPIRES (both 2002), UNDERWORLD (2003), THE PUNISHER (2004) and UNDERWORLD: EVOLUTION (2006).  Best Achievement in Visual Effects 1991: TERMINATOR 2: JUDGMENT DAY (w. Dennis Muren, Stan Winston & Robert Skotak) 1 nomination, 1 Award