[UPDATE: Completed Rum-Maj!] Still waiting on some pieces to come in for her alt-mode (I'll be borrowing some pieces off of a TF Animated Oilslick), and the pipes and tires for robot mode, but I'm pretty happy with how Junkion Rum-Maj is coming along!
The big gun/ax the combiner guns JunkPuncher is carrying are a PC-19B Perfect Combiner BLACK BEAST GORIRA+ Upgrade Set that I picked up on eBay, they seemed like a perfect upgrade for this build. For Rum-Maj, her forearm and standard piece are courtesy of Grimlocks Forge (over on Facebook) JunkPuncher's guns: HN-Z & FRN-Z Rum-Maj's Guns
So Kei Zama is on Twitter (@kei_zama) and I really really want her to see this. Oh my god. Incredible.