Mephiles the Dark

Mephiles the Dark
He is the mastermind behind the sonic the hedgehog 2006 game. He was imprisoned 10 years prior to the game by the duke of solleana in the scepter of darkness. Mephiles was freed when Dr. Eggman attacked Rouge, who was holding the scepter, in the air and dropped it, which caused the sceptor to shatter. Mephiles resembels Shadow's form apart for slight colour differences. He then manipulated silver in an attempt to kill Sonic and force Elise to cry, thus releaseing Iblis the second half of solaris in the final chapter of the game. He merges with Iblis and becomes solaris after impaling Sonic with a energy beam and making Elise cry. After the battle solaris reverts to a small flame and is blown out by Elise. This erases solaris from exsistence.

still alive...
but if solaris never exsisted then they would never have battled it or erased it meaning mephiles could still exsist