The Emperor demands strenght beyond titans, the emperor demand power to go agaist the most powerfull creatures, without causing major damage to the atmosphere and the struture of the planet. 2 Brothers are choosen, 2 brothers who will be forever conected by the Omnisaia, the emperor, for their integrity, for their synchronization, they will prevail over the enemys, no matter what it is the foe, or disaster of nature. Because this is the emperor's will.
inb4 this is essentially the imperium's take of Evangelion, translating: giant bio-mech. i absolutely wouldnt be suprised, considering how huge the castrated whinny bois in power armor have become lately...