I think it is Merlina she turned evil in the end
It's called With Me.
You can! ::**SPOILERS!! SPOILERS!!**:: Sonic is the true king arthur. It is revealed AFTER the fight with the final boss, when you suceed.
The Dark Queen aka Merlina. You can fight her at Dark Hollow after slaying the dragon in Dragon's Lair.
In the levels Deafet the boss: Lancelot and Deafet the boss: Lancelot returns
He does for the final boss, but that's it
You cant.Only in the final boss you can
There is. At the end of the story in adventure mode in Sonic and the Black Knight, when Sonic gets Excalibur to combat the boss, Dark Queen, Sonic gets golden armor and he is not in super form.
at the end of subspace sonic will appear on the final boss kill the final boss to unlock sonic
You can be super sonic on the final boss boss for ps3, ps2,wii, and xbox 360
i don't think there's a final boss mode in sonic adventure dx
In Sonic and the Black Knight, after you defeat the Dark Queen.-----------------------------slightly wrong not after you defeat the dark queen it is how you battle her there is also a transformation cutscene of sonic to king sonic but after the battle is over you can be king sonic unless you play the boss battle again.
Sorry, but the Egg Nega-Wisp is the real Final Boss.