That is Classics Prime and Armada Overload with Rollout's pin. The combination allows Classics Prime to pull the trailer (Overload) pretty well but it isn't a very secure connection. I'm currently working on some robot mode combinations, and will post images once I work some out. The Armada Rollout/Overload team has to be one of the most "versatile" Transformers in awhile. I've had it with Armada Prime, Energon, and Cybertron Prime in various forms. And, yes, before you ask I did indeed move my Classics Prime's rubsign.