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 15 - Vampire A, Frankenstein B and Werewolf C

(Note: This is based on Universal Monsters involving Dracula, Frankenstein and The Wolf Man.)

Alphabet Lore (c) Mike Salcedo
Dracula (c) Bram Stoker
Frankenstein (c) Mary Shelley
The Wolf Man (c) Curt Siodmak, George Waggner and Universal Pictures
Universal Monsters (c) Universal Studios
Idea and artwork (c) me