User blog comment:UkantorEX/Main Antagonists/ Boss Characters- Your Favourite(s)?/@comment-1764349-20121012121336

Hm I'd go with Chaos, Dark Gaia and Mephiles. Buy from the 3 of them Mephiles is definately one of the best. Plus he's the only one who was actually able to kill Sonic even though that never really happened.