It's time for 31 Days of Alphabet Lore Halloween featuring Alphabet Lore (both canon and fanon) and to a lesser extent, Number Lore (also both canon and fanon).
Day 30 - Ooogie Boogie Shadow 3/Three
Alphabet Lore and Number Lore (c) Mike Salcedo
The Nightmare Before Christmas (c) Tim Burton and Disney
Idea and artwork (c) me