Auriol (EntityTopic, 14)

From Compile Worlds

Doppelganger Arle is an evil red clone of Arle. At the beginning of Puyo Puyo~n, she possesses Satan and makes him run a demented carnival to steal Carbuncle and use his bad-ass laser for injustice. She dressed herself up as a clown to keep herself clear from suspicion until the time was right.

She is the first villain in the entire Puyo series to break the "OMG Satan is the last boss" rule and has been the only female villain to date. She also shows up in Puyo Puyo 7, with a new outfit and the shorter, less evil name of Dark Arle... oh wait! That's a different character!

There are a few rumors floating about that D. Arle might be appearing in Madou Monogatari Fever or Subete PuyoPuyo, but these have neither been confirmed or denied.