- For the power-up also referred to as "Blue Shield", see Shield.
The Blue Shield (ブルーバリア Burūbaria?, lit. "Blue Barrier") is a TV power-up that appears in Sonic 3D Blast. When obtained, this power-up grants the user a shield that protects one from electricity.
TVs that contain Blue Shield display an icon depicting a blue sphere with a bright center. The Blue Shield itself take the form of a pulsating blue sphere.
In the gameplay of Sonic 3D Blast, when picking up the Blue Shield, Sonic will get enveloped by the Blue Shield. While wearing it, Sonic will be protected from a single hit that would otherwise inflict normal damage. It also makes him immune to electricity-based hazards, such as the electric flooring in Gene Gadget Zone. Once damage is taken, Sonic will lose the Blue Shield and suffer knockback without taking damage. However, it does not protect Sonic from dangers such as bottomless pits.
It is worth noting that the Flickies following Sonic also receive a small Blue Shield when Sonic obtains one; the Flickies' Blue Shields do not disappear upon taking damage unless Sonic also takes damage.