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In recent times, serious loner Knuckles been killed and resurrected and discovered grim truths about his origin - which has just made more proactive in fighting evil! He uses the Floating Island's weaponry and Guardian Robots to assist in the war.
Science genius Porker Lewis was one of the original Freedom Fighters, until he was captured by Metallix and suffered a nervous breakdown. Now he helps Knuckles with the ancient echidna technology and Guardian Robots.
The Chaotix Crew
...hang on, didn't we do them already?