Buxom Gal and BGDark didn't know they had the ability to fusion untill the day they both got slamed into each other when fighting The Metalurgists and her army of Robots. They where suprised by the event. It took them a while to unfuse. They don't like fusing together mostly because BGDark is a bit more agressive. The 2nd time they Fuse it was to fight Dr. Ghoti in a new Land Dweller of ultimate doom battle suit just desgined to fight the buxom Gal's. However he didn't get the Memo that they could Fuse an have access to their Hax finisher the "TEN GOKU KARA NO HI".

Lets say parts of SMT are still a bit radioactive.. Thats ok the Ant Queen and her colony are helping with the clean up.