Finally, Jessie and James as Kamek and Bowser.

With James, I got a mix between a full-on Bowser look, as well as him in your basic Bowser suit. Figured I'd share an example of both.

For Jessie, I didn't want to turn her into a full-blown Magikoopa, so I thought just the robes and broom would do. She comes off as more of a witch, but I think it still gets the point across.