Map-Primus.jpg (483 × 334 pixels, file size: 50 KB, MIME type: image/jpeg)
Cybertron Primus, Optimus Prime Sonic Wing Mode and Galvatron, from the Giant Planet pack-in map. Art by Don Figueroa.
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In the Unicron Trilogy universe, Primus was introduced as the living energy core of Cybertron...