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 10 - Hitchhiking Ghost Numbers 1, 2 and 3
Alphabet Lore (c) Mike Salcedo
Number Lore (c) Soup Earth Society
The Haunted Mansion (c) Disney
Idea and artwork (c) me