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Janet Mohler is a visual effects production professional who worked at Industrial Light and Magic (ILM) during the late 1980s. She is credited as Visual Effects Producer on Ghostbusters II (1989),1 one of the most effects-intensive comedies of its era.
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Mohler worked within ILM's production management team at a time when the Lucasfilm-owned studio was expanding its volume of theatrical features beyond its Star Wars roots. Her known credits from this period span three 1988-1989 productions.2
On Willow (1988), directed by Ron Howard, she served as Unit Production Supervisor for ILM.2 That production was notable for pioneering the digital morphing technique developed at ILM by Dennis Muren and Doug Smythe, which would become a foundational VFX tool through the 1990s.3
On Ghostbusters II (1989), Mohler received the title of Visual Effects Producer for ILM, the senior production credit for the studio's contribution.1 She worked alongside Director of Effects Photography Mark Vargo and Visual Effects Art Director Harley Jessup.1 ILM's work on the film included the Slimer puppet sequences, supernatural crowd scenes in the finale, and the animated Vigo painting effects.14 The visual effects were produced at ILM's facility in Marin County, California.1
IMDb also credits her on Wildfire (1988), a romance drama directed by Zalman King.2
No further public record of her career beyond these late-1980s credits has been located.
Some content on this page was researched using the Ghostbusters Wiki on Fandom.
Ghostbusters II press kit (Columbia Pictures, 1989). Via Spook Central, "Ghostbusters II Press Kit: Credits" and "Ghostbusters II Press Kit: Production Information." Credits: "Visual Effects Produced at INDUSTRIAL LIGHT AND MAGIC, a Division of LUCASFILM LTD., Marin County, California. Director of Effects Photography: MARK VARGO. Visual Effects Producer: JANET MOHLER. Visual Effects Art Director: HARLEY JESSUP." Production notes: "Visual-effects supervisor Dennis Muren, from Industrial Light and Magic, was brought in by Reitman as soon as there was a first draft." ↩ ↩2 ↩3 ↩4 ↩5
IMDb, "Janet Mohler (nm1031409)," accessed 2026-06-13, https://www.imdb.com/name/nm1031409/. ↩ ↩2 ↩3
VFX Voice, "Over 30 Years, WILLOW Has Morphed into an Effects Classic," accessed 2026-06-13, https://vfxvoice.com/over-30-years-willow-has-morphed-into-an-effects-classic/. Doug Smythe developed the MORF morphing software at ILM, drawing on research by Tom Brigham, under visual effects supervisor Dennis Muren. ↩
Greene, James, Jr. (2022). A Convenient Parallel Dimension: How Ghostbusters Slimed Us Forever. Lyons Press, Essex CT USA. ISBN 9781493048243. ILM Creature Shop supervisor Tim Lawrence oversaw the Slimer puppet work for the film. ↩
