Well-Spoken Sonic Lightning Flash is a young speedster whose real name is Keigo, with a round helmet and giant athletic shoes. When wearing his shoes and battery pack, Sonic can run at speeds of up to 500 mph.
First Appearance: Final Crisis #2 (August, 2008)
- Final Crisis Vol 1 2
- Final Crisis Vol 1 3
- Final Crisis Vol 1 4
- Final Crisis Vol 1 5
- Final Crisis Vol 1 6
- Final Crisis Vol 1 7
- Final Crisis Aftermath: Dance Vol 1 1
- Final Crisis Aftermath: Dance Vol 1 2
- Final Crisis Aftermath: Dance Vol 1 3
- Final Crisis Aftermath: Dance Vol 1 4
- Final Crisis Aftermath: Dance Vol 1 5
- Final Crisis Aftermath: Dance Vol 1 6
- Final Crisis Sketchbook Vol 1 1
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