A bad, cruel criminal — be off, wicked nobleman! (7)

I believe the answer is:

dracula

'wicked nobleman' is the definition.
(I know that Dracula is sinful)

I can't explain the rest of the clue.

(Other definitions for dracula that I've seen before include "Bram Stoker creation" , "gothic novel" , "Vampire Count (Stoker)" , "Bram Stoker novel" , "Bram Stoker's batman" .)

I've seen this clue in The Guardian.

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