Yes, the untapped power that lies within you. Now, child, it's time you awakened that power and realized your full potential.
Prime - Maleficent 6★ Medal
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The Guilty Crown (ギルティクラウン Giruti Kuraun?) is a form of Roxas's Kingdom Key which appears in Kingdom Hearts 358/2 Days. It can be upgraded to the Guilty Crown+ and Guilty Crown++.

Stats

Kingdom Hearts 358/2 Days
Guilty Crown
Stats
Strength Magic
Base Unit Ultima Base Unit
+0 +0 +0 +29 +0
Defense Crit Rate Crit Bonus
Base Unit Base Unit Base Unit
+0 +0 +6 +0 +4 +0
Attack Speed Approach Speed
Ground Air
1.0 1.0 1.0
Obtained
Attach Phantom Gear 4
Kingdom Hearts 358/2 Days
Guilty Crown+
Stats
Strength Magic
Base Unit Ultima Base Unit
+0 +0 +0 +25 +0
Defense Crit Rate Crit Bonus
Base Unit Base Unit Base Unit
+0 +0 +4 +0 +4 +0
Attack Speed Approach Speed
Ground Air
1.0 1.0 1.0
Obtained
Attach Phantom Gear +4
Kingdom Hearts 358/2 Days
Guilty Crown++
Stats
Strength Magic
Base Unit Ultima Base Unit
+0 +0 +0 +39 +0
Defense Crit Rate Crit Bonus
Base Unit Base Unit Base Unit
+0 +0 +8 +0 +9 +0
Attack Speed Approach Speed
Ground Air
1.0 1.0 1.0
Obtained
Attach Phantom Gear ++5