The dream team that will save the Universe.
Not at all in scale with each others, but let's not nitpick.
I MADE THE HEROIC ROBO-TEAM!ULTIMATE OPTIMUS PRIME. All heroic teams need a heroic leader. Why not having the best one at his most powerful form? (Paladin)
GOLDORAK a.k.a GRENDIZER (piloted by Actarus a.k.a Duke Fleed). That godlike titant will had incredible firepower to the team. (Warrior)
MOTOKO KUSANAGI. She kick some serious ass, and she's expert at hacking. (Rogue)
CUTEY HONEY. That Barbie doll can do anything and she can look the part. Ultra powerful, yet she is expert at stealth and undercover missions. (Rogue)
HATSUNE MIKU. A team need it's mascot and motivator/cheerleader. (Bard)
RATCHET. All these robotic beings would be in great trouble without an expert mechanic/medic. (Priest)
Oh, and just a reminder of how Goldorak is big compared to a Optimus Prime figure in scale....