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 21 - Grady Twins И/I and Й/I-Kratkoye featuring Р/Er
Alphabet Lore (c) Mike Salcedo
Russian Alphabet Lore (c) Harrymations
The Shining (c) Stephen King
Idea and artwork (c) me