joker

the joker in the pack

someone or something that could change a situation in a way that you do not expect The independent candidate is the joker in the pack in this election.

joker

n. a man; a guy. Who was that joker I saw you with last night?

Common Names:

Name	Pronounced	Usage
Adelbert	AH:-dəl-bərt (Dutch)	German, Dutch
Pope	[pu:p]
Saveliy	-	Russian
Takouhi	-	Armenian
Webber	['webə]
Bosse	-	Swedish