Board Thread:Questions and Answers/@comment-25007558-20160115182629/@comment-37518581-20190416001851

I think the mortician is the Ghost of Elias Kingston. I think that because:

Elias Kingston is a more popular monster than some of the other ones the mortician was speculated to be (example Purvis Parker's Ghost)

Kingston wears a purple outfit, and the Mortician has a purple outfit.

the Mortician's pale skin could be reminiscent of Kingston's blue skin.

both monsters have black hair.

The monsters in SD 2 don't look a lot like their cartoon versions. Like the witch doctor for example, looks nothing like the animated one in 'a tiki scare is no fair'. And chickenstein looks nothing like the one from a pup named Scooby doo either.

The Mortician could also be, like you said, made for the film, like the mermaid and Cotton Candy Glob. We won't know until we get the placards though.