It is the unhinged but innocent looking vampire ballerina, Abigail as an Amigurumi Plush Keychain! 
 
She can be purchased as either a normal amigurumi plush or a keychain amigurumi plush
 
Abigail stands at 4 3/4" tall, and 3" wide.
 
Please allow time to make as this item is made to order. Processing time takes 1-2 weeks.
 
I do not own or claim to own any of these characters.