Gosei Ultimate

It surfaced the net yesterday and it just so happened I wasn't patrolling the web that day. As you can see from the image it's some sort of space ship or something that looks like one. It attaches itself on the back of Gosei Great though. It doesn't look half bad, I mean it could of been worse...

Source: http://henshinjustice.com/forums/showpost.php?p=1026117&postcount=6603

Source: http://henshinjustice.com/forums/showpost.php?p=1027104&postcount=6645