Cast and crew
John Semper Jr.
writer · 2 titles on the site
Wrote2
Extreme Ghostbusters
September 1, 1997–
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Writer
The 13 Ghosts of Scooby-Doo
September 7, 1985–
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Writer
Cast and crew
writer · 2 titles on the site
Extreme Ghostbusters
September 1, 1997Writer
The 13 Ghosts of Scooby-Doo
September 7, 1985Writer