Metal Ultron Sonic Prime vs Iron Sonic by Huynhjake2001 on DeviantArt

Metal Sonic vs Perfect Cell Prelude by Strunton on DeviantArt

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Metal Ultron Sonic Prime vs Iron Sonic by Huynhjake2001 on DeviantArt

Multiverse Tag-Team: Ultron and Metal Sonic by armadrillo1234 on DeviantArt

What if : Metal Sonic got upgrade by Ultron by Metalsonicomaewa on DeviantArt

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Metal Sonic Mark VI : The Iron Sonic - shadded by funkyjeremi on DeviantArt