The Power Shield (パワーシールド Pawāshīrudo?) is a power-up that appears in the Xbox 360/PlayStation 3 version of Sonic Unleashed. When obtained, Sonic the Werehog will take less damage for a short time.
The Power Shield resembles an aqua green kite shield with a golden frame and a golden gem-embedded rhombus on the middle of the front surface.
When touching the Power Shield in gameplay, Sonic the Werehog will glow with an aqua green aura and any damage he receives will be significantly reduced for a limited time, meaning his Life Gauge will be depleted less than normal.
The Power Shields can only be found in the game's Nighttime Action Stages, where they are hidden inside specific breakable objects. To expose them, the player has to destroy these breakable objects.