Lyric the Last Ancient is the main antagonist of both Sonic Boom: Rise of Lyric and Sonic Boom: Shattered Crystal. He is the last of a benevolent race called the Ancients, but turned on his peers and sought to create and strengthen a robot army using power crystals to destroy all organic life and built a world of twisted metal and robots. Before he could carry out his nefarious deed, however, he was imprisoned. A millennium later, Lyric was freed and resumed his plans, but met opposition from Sonic the Hedgehog and his crew.
- Lyric will return in Sonic Storm Adventures: Next Generations series as the main antagonist in hedgehog form.