After the events of Sonic Forces, we meet Dr. Eggman and Metal Sonic in Eggman's secret base...
Eggman:"Sonic managed to win against all the odds...However, luck was finally on our side."
Eggman proceeds to pull out something from his coat.
Eggman:"To believe that the Phantom Ruby survived through the war."
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Eggman:"Since I still have the Phantom Ruby, we can start planning for next time."
Eggman places the Phantom Ruby on his work table As he walks out of the room, Metal Sonic looks at the Phantom Ruby...memories flood Metal Sonic...all the times Sonic bested him...
Metal Sonic:"With this Ruby...I'll become more powerful..."
Metal Sonic grabs the Phantom Ruby, causing the room to explode in a bright flash.
BOOM
Eggman turns back and sees Metal Sonic in a pink aura.
Eggman:"METAL WHAT ARE YOU DOING!?"
As Eggman stares in shock, Metal Sonic starts to transform. Metal Sonic absorbs the Phantom Ruby and his body starts changing. Metal Sonic has become Metallix... Metallix proceeds to burst in a explosion, destroying the base. Metallix is unconscious and the power of the Phantom Ruby creates a portal, causing Metallix to go in...
