When shapeshifting, he turns into a puddle of liquid metal and then emerges in a new form. This allows him not only to perfectly imitate the Effect Liquid Metal Because Dr. Eggman Created Metal Sonic to destroys sonic the hedgehog THAN Metal Sonic Got defected by Miles Tails PROWER Sonic The Hedgehog knock Metal Sonic over Lands Liquid Metal Giving Metal Sonic Liquidy Upgrade in Sonic Heroes reactivation all ROBOTS in the EGGMAN EMPIRE FORMATION ALL WEAPONS AND E-10000B, E-10000G, E-10000Y and DR. EGGMAN and Formed Himself neo Metal Sonic with Chaos emeralds to Transform to liquid Metal creatures call metal Overlord and Metal Madness and Metal Sonic Will Form into giga metal sonic Also with liquid Metal with Phantom Ruby

Liquid metal Sonic

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Powers and abilitiesNeo Metal Sonic shapeshifting. Neo Metal Sonic is, like his normal form, able to scan the life data of other life forms, allowing him to copy and replicate others' attributes and abilities flawlessly. ... When shapeshifting, he turns into a puddle of liquid metal and then emerges in a new form. nanorobotics
In the case of fauna that have been transmuted by the virus, their bodies' organic matter will be fully transmuted into a liquid metal composition. https://sonic.fandom.com/wiki/Metal_Virus

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