Mister Chuckle Teeth



Mister Chucklemouth is the main antagonist of the X-Files episode, "Familiar", of the 2018 revival series - being one of the show's newest Monsters of the Week and gaining popularity due to its horrific appearance and the tone of the episode being much more in-keeping with the darker elements of the older X-Files over the more comedy-centric stories that followed it.

Trivia

 * the episode is noted to have many similarities and homages to Stephen King, with Mister Chucklemouth especially being compared frequently to "IT".