Personally, I see him as Ghost/Fire, but that may be because I've been overly exposed to the SMT version: http://images2.wikia.nocookie.net/__cb20080610012606/megamitensei/images/5/5f/Pyrojackoriginal.jpg
Unless, of course, you're just talking about the carved pumpkins and not the myth, in which case Fire/Grass.
"My faith protects me. My Kevlar helps." Michael Carpenter - Death Masks Official Norn of the Shin Megami Tensei IV board
Ghost/Grass (is there one?) since yeah... look at parentheses.
Why they keep using the same animal, etc. types (how many foxes are there?) I'll never understand.
There's no Grass/Fire either, though.
As I said in another topic the other day, I had a Jack-o-lantern idea that becomes a reference to the Headless Horseman of the Legend of Sleepy Hollow. And if he's a Horseman, what type is the Pokemon horse? Uh huh.
Creator of Jay's Journey (see quote!) "It's not ten years old! Therefore, it sucks!" - Nostalgia whores everywhere