User blog comment:Cloudthehedgehog12/Top 5 Characters that should be brought back to the Sonic games/@comment-1986314-20111012191929

Chaos: Chaos re-appeared in Sonic Battle for the GBA. Also, I disagree that he should re-appear, considering his role was to be an ancient deity angered by destruction caused in past events during Sonic Adventure, and he was put to peace in the end. But you are right, he is a pretty awesome character.

Mighty: Oh yes. Mighty has been placed in the Archie Comics, so Sonic Team should learn from them to reuse old characters.

Nack: Nack is one of the best villians in the Sonic series. A bounty hunter who doesn't do the dirty work unless he's offered a special price, unless he decides to keep it for himself. He will be brought to justice.

Bean and Bark: Both great candidates for modern games. Bean definitely deserves a voice actor (Matt Smith, David Tennant, both would do great as long as their voices are at the right pitch for the bomb-crazy duck), but not Bark. If Bark the Polar Bear is brought back to the series, I want them to keep him silent.