Beetlejuice...

I won’t say the rest because I’m sure you know what happens. These are some scary/horror themed DC characters

 

Left to right

 

Frankenstein

Shade

Zatanna

John Constantine

Yellow Lantern Batman

Etrigan the Demon

Jason Blood

Raven

Deadman

The Phantom Stranger

Deacon Blackfire

Doctor Fate (Kent Nelson)

 

 

Credit to Doctor Allo Zaat for the idea and the Etrigan combo

Done