Pretty simple: Post a character name (and what they're in) and next person does the same with their character's name starting with the next letter of the alphabet.

Start: 

Annabelle in 'Annabelle: Creation'

Peppermint Pattie -- Peanuts

Olive Oyl 

You went backwards, Insomnia! :P

Quillam -- from Doctor Who

Roger Rabbit

Sabrina the teenage witch

Thumper -- Bambii

Ursula - George of the Jungle

Velma - Scooby Doo

Waldo - Where's Waldo

XR - Buzz Lightyear of Star Command

Yzma - Emperor's New Groove

Zazu - the lion king

Allison -- Pretty Little Liars

Bert - Mary Poppins

Casper -- Casper the Friendly Ghost

Dwight Schrute -- The Office

Elmer - the patchwork elephant 

Fred - The Flintstones

Gargamel -- The Smurfs

Han Solo - Star Wars