Top Definition
A form of Sonic the Hedgehog that appears in the game Sonic and the Black Knight for the final boss fight. He is covered in golden armor and wields the Sacred Sword Excalibur. He doesn't use up rings, but can lose them if hit. Excalibur Sonic seems to only have a few abilities such as Dodging, Slashing, and Soul Surge
Sonic Fan: Man Excalibur Sonic is so cool!

2nd Sonic Fan: nah. Darkspine Sonic was better.
by ChoasPunishment February 26, 2010
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