Scyphi is the mastermind behind it all!

"Bluebot #60175-178, reporting in," Bluebot #60175-178 saluted. "To what am I summoned for?"

Bluebot #1760-2 saluted back. "Are you aware of our counter-operation against our makers, Bluebot #60175-178?"

"I am indeed, Bluebot #1760-2. Twilight Sparkle must be eliminated at all costs, am I correct?"

"Yes."

"And Rarity is being taken care of?"

"Bluebot #156031-4 is trailing her as we speak. Is the steamroller ready, Bluebot #1760-2?"

"Yes."

"We ride at dawn."