Monthly painting- costume ideas! (Patreon)

Alright, I'm calling it- the winner by a nose is the " Halloween theme, bondage slave and master couple.  Slave carrying the candy. " idea. Though it looks like I'll have to draw some foxes fucking for you guys soon, that keeps coming up a real close second!

I've got an idea that I think will work for this, but I don't know a ton about pop culture so I could use a little help. Can't have a halloween theme without some kind of dress up, but I'm struggling a bit to think of a fun set of costumes for a couple!

I'm looking for a pair of costumes that fit the halloween theme and can be drawn kinda sexy like. Bonus points if the costumes make sense as a pair- super mega bonus points if the costumes make sense with the dom/sub dynamic. Think... I dunno, Dr. Frankenstein and Igor. Except something that can actually be kinda sexy. 

Just looking to brainstorm ideas a bit- if you've got any neat ideas, I'd love to hear 'em!