The only way to beat the giant Beta is via direct attack to the brain, forcing Ogre into a very perilous situation. Auctioneer risks his life to locate the brain, and Ogre uses Number 11 to take it out and defeat Beta.

He reunites with the Squad and celebrates, but his joy would be short-lived.
Why's Alpha's hand there?
يد آلفا؟
Alphas Hand!
¡La mano de Alfa! ¡No tienes el EX-ARM!
¡La mano de Alfa! ¡No tienes el EX-ARM!
La main d’Alpha !
Tu n’as pas d’EX-ARM !
La mano di Alfa?!
Por que está com a mão do Alfa?!
Это рука Альфы?