“Frosty the Snowman,” the beloved animated holiday classic, airs tonight at 8:30 p.m. Eastern on NBC. The show follows the iconic cartoon adaptation of “How the Grinch Stole Christmas.

Red One features a lot of real-life myths and monsters from multiple different cultures, and while referring to Frosty the Snowman as a western myth might be a bit of a stretch, the character is ...