How about a nice hell background with screaming tortured souls? The current one is a little dull. It doesn't even have a karaoke machine!
A bar would be good too. Angled so there's a drawn-in bartender and the left character is sitting at the bar.
Or no bartender so we can add a floating head as the right character.
Yeah, the reverse fast food is a good idea too. We have reverse houses in various forms of interiors and open doors. Or a cash register that's not a fast food place. So Chicka can work the registers.