Optimus Prime Twilight Sparkle Song - Skillet Rebirthing.brVideos of MLP and Transformers ... :P.brSmaller episode of Sci-Twi, and with the power of belonging to Unicron. Once opened amulet with the power, Unicron seize and dominate. Meanwhile, Ratchet .brSmaller episode of Sci-Twi, and with the power of belonging to Unicron. Once opened amulet with the power, Unicron seize and dominate. Meanwhile, Ratchet .brOptimus Prime - Twilight Sparkle Sam - Sunset Shimmer Bumble Bee - Rainbow Dash Megatron - Tirek.