Board Thread:Questions and Answers/@comment-26316498-20150419211420/@comment-679780-20150421230913

From the pre-Mobius Archie comics is Ultra Sonic. Sonic was able to attain this form with a Super Emerald along with a huge ammount of Power Rings.

Ultra Sonic can also transform into elemental themed forms such as Solar Sonic (pyrokinesis), Polar Sonic (cryokinesis), Eco Sonic (plant manipulation) depending on what places of Mobius he's running through.