Perfect Chaos (Sonic Adventure/Sonic Generations)

Perfect Chaos is the transformation of Chaos after absorbing all of the Chaos Emeralds' energy and boss fight in the Sonic series, in Sonic Adventure, he is the main (and only) boss in Super Sonic's story and is overall the nineteenth (twenty sixth if counting the character battles and the two fights with the Egg Carrier) and final boss of the game, while in Sonic Generations, he is the second boss of the second area, is the main boss of that area and is overall the fourth boss of the game.

Since today, Perfect Chaos has been praised by many Players for its qualities, and has been considered as one of the best bosses in the series.

As a whole

 * 1) Perfect Chaos has hands down the best design out of any boss in the Sonic series that you really wouldn't see in a Sonic game, and yet, it works.
 * 2) The main theme, Open Your Heart, is a great song.

Sonic Adventure

 * 1) The gameplay for Super Sonic is very nice.
 * 2) To damage Perfect Chaos, you have to charge at full speed until Super Sonic's aura is blue, you can then charge head first though Prefect Chaos and into his brain, damaging him.
 * 3) The atmosphere is intense, it takes place in a destroyed Station Square
 * 4) Perfect Chaos has many flashy attacks, such as launching energy laser, unleashing water tornadoes, and firing an energy beam from his mouth.
 * 5) You have to gather rings to keep yourself in check, making this battle very challenging but fair.
 * 6) You get a beautiful ending after the battle.

Sonic Generations

 * 1) An excellent remix of Open Your Heart plays during this battle.
 * 2) The design of Perfect Chaos has been up dated, making him even more intimidating then before.
 * 3) The battle plays very similar to the Adventure versions, but there are some tweaks that makes this battle original.
 * 4) Instead of playing as Super Sonic, you play as normal Sonic, which shows of just how much stronger Sonic has become.
 * 5) You now have to mainly Boost to damage Perfect Chaos, unlike the previous versions were you have to charge up.
 * 6) Perfect Chaos has one new move, and that's using his tentacles as a projectile.

Bad Qualities

 * 1) Sadly, Perfect Chaos only has six Hit-Points, which is one less then the Egg Viper.
 * 2) Some attacks can get annoying, in the second phase Perfect Chaos will shoot homing lasers that will aim at Sonic.

Tips

 * 1) Try to gather a decent amount of rings, you only have a limited amount to use them.
 * 2) An easier way to gain speed is by jumping, the game treats it like your jumping off a ramp, so it makes it easier to gain speed.

Trivia

 * 1) The final battle with Perfect Chaos in Sonic Adventure was meant to be even more challenging, but was cut due to limitations of the Dreamcast.