Triptych: Creepy Crawlies

"My Neighbor Oogie" (t-shirt) by Ratigan

"Noche de los Muertos" (t-shirt) by Samiel

"Skellington Sweater" (t-shirt) by Busted Tees

Triptych: Everyone Hail to the Pumpkin King!

"Once Upon A Pumpkin" (t-shirt) by Jacob McAlister

"Halloween Town" (t-shirt) by Jack To The Future

"Jack Skellington Kid" by Andy Fairhurst

Triptych: Spooky and Remote

"Double R Diner" (t-shirt) by kgullholmen

"Halloween Town" (t-shirt) by Marissa Davis

"Spooky Comic" (t-shirt) by Harebrained

Remember that time Agent Mulder showed up on Twin Peaks as a cross-dressing FBI agent? He had a checkered past before he got assigned to the X-Files, that Mulder did.

Triptych: Jack and The Doctor

"Jikan No Hanshu" by Adams Pinto

"Who's This?" by Karen Hallion

"His Blue Box" by Marcus Freeman

Triptych: Spooktacular

"Slender Jack" (t-shirt) by Adho1982

"Endless Death" by Matt Kaufenberg

"Puzzle Head" by Zillabean

A mashup between Professor Layton and Pyramid Head? Oh Internet, you never fail to make my day weirder.

Triptych: What The Hey Hey!

"The Adventures of Finn & Jake" (t-shirt) by Captain RibMan

"Burton-Style Bubblegum and Finn" by Vaughn Pinpin

"Legendary Heroes of Ooo" by Emmie Marielle Rodriguez

Triptych: It's The Most Burtony Time Of The Year

"Nightmare In Pumpkinland" by Alison Acton

"The Curse" by TheGeekGallery

"Beetlejuice Genuine Ale" by Atlas Specter

Okay, so Castlevania II is not related in any way to Tim Burton. It's still spoOOOOoooOOOOoooooky.

Triptych: Sugar Skulls

"Day of the De-Adventure Time" by Ewan Warburton

"Jack do los Muertos" by Synaptix

"LV-426" by Jonathan Koshi

Double Triptych: The Adventure of a Lifetime

"Last Line of Defense" by Justin White

"Adventure Before Xmas Time" (t-shirt) by Warbucks Design

"Mathematical!" by Anthony Petrie

"Fistful of Adventure" by Dave Guertin & Greg Baldwin

"Marceline The Vampire Queen" by Michael Anderson

"Adventure Time Princesses" by Hirokiro

Triptych: Alternate Universe NES Box Covers

"Kraven The Duck Hunter" by Brendan Tobin

"Jack's Nightmare" by Brinkerhoff

"NES Watchmen" by Illustrography