Pickles?

I need finger foods.

We are hosting a smallish gathering
of miscellaneous madmen/persons in a mystery men/person party theme.

I play Control Freak (not The Grammenator, thanks).
But I have no costume ideas.
I know I need to show cleavage, but otherwise, nada . . .
And powers?
What are my powers?
I'm blank.

Pickles would work for me, but not everyone.