This is a fine reason why you might not want to mess with the Yo Gabba Gabba................. Because they can all just combine into this behemoth!
It consists of.......
The "Y" on the chest stands for both the mecha's name and the band that the mecha was based off of. The orange on its torso, its chest (Specifically the "Y"), and the mecha's eyes are a reference to DJ Lance, their sometime-leader.
The tank being on the left leg is kinda reminiscent of Bruticus Maximus having a tank (Brawl) on HIS left leg, though he had a jeep (Swindle) on his right leg, and the helicopter (Vortex) was on his left arm.
The chest of YoGab Bah-Oh is the tower of Red's battleship mode (Which is piloted by Muno).
His head has all five Yo Gabba Gabba colors, though blue is on the middle-right, yellow being on the middle-left, green being on the far right, pink being on the far left on his head is a reference to how the Super Sentai rangers of Red, Blue, Yellow, Green, and Pink respectively had 1, 2, 3, 4, and 5 for their respective numbers.