Although the forces of Discord lost the battle at the gates, they had managed to capture some Guardponies and torment them into squealing what they know.
"Stop... please." the horribly mutilated Earth Pony begged, "I'll tell you whatever you want. I'll tell you everything!"
"Why are you here on my world?" Grule demanded as Borbutz watched. "Answer me and I'll show you mercy."
The Pony sighed in defeat. "We were assigned to retrieve a Titan: Domesticus. It was badly damaged in the defense of this world ages ago. We were hoping to repair it." Having more than enough information, Grule swung his bladed mace and slaughtered the Guardpony to death.
Borbutz raised his only eyebrow in confusion. "Titan? What dat?"
"Power unimaginable, Borbutz." Grule explained, "A war machine unlike any other... a weapon to devastate worlds... entire star systems, even. If I can gain control of the Titan, none could stand in my way. I'd be a God. Organize your forces, Borbutz, and let us be done with these Equestrial Guardponies. Afterwards, we'll settle matters between us."
"Soundz good, Grule." said Borbutz in agreement. "I'll gather da boarz, and once I crush da poniez I'll help ya bleed somethin' good." The Warboss waddled away with his Hogs, and the Discord Lord grinned at the Hog's obliviousness.
"Not unless I crush you under the Titan's heel first, Borbutz."