You cheat.
you unlock king arthur (the black knight) in battle mode
You calibur the whole game and king auther has it the whole game.
You can! ::**SPOILERS!! SPOILERS!!**:: Sonic is the true king arthur. It is revealed AFTER the fight with the final boss, when you suceed.
Sonic and the Black Knight is a new Sonic game coming out for the Wii only. It combines Sonic's trademark speed with a new swordfighting system using the Wii remote. Set in the world of King Arthur, Sonic needs to eliminate the Black Knight. (Hence the name.) I'm stopping here so as to not ruin the game.
this website is a total ripoff
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.
the characters are sonic,amy,tails,shadow,silver,jet,blaze,knuckles,and king arther
Go to Knight's Passage after you beat King Arthur for the second time and do the Beat the Clock mission.
Knight's Passage Mission "Special Challenge: Defeat ten will-o-wisps".
It's in the Molten Mine Mission "Speed Run".
defeat King Arthur in the second battle (credits will roll) then beat the first mission in "Knight's Passage"