Limiters

The Limiters (リミッター) are objects that appear in the Sonic X anime. They are rings worn by Shadow the Hedgehog to inhibit his power.

Description
The Limiters are golden rings that Shadow the Hedgehog wears on his wrists and ankles. When worn, they limit the amount of power Shadow uses during combat and other situations. When he takes them off, Shadow can access his full strength, giving him a drastically boost in power, though at the risk of thoroughly over-exerting himself; in fact, without them, Shadow quickly tires out when just fighting at normal power.

The Limiters expand and contract to Shadow's will, allowing him to remove and put them on with more ease, although he can also remove them normally. The Limiter are connected to the red tongues on the black cuffs of Shadow's gloves; the red tongues disappear when the Limiters are removed, but regenerates when he puts them back on.

History
Seemingly given to Shadow the Hedgehog during his time on the Space Colony ARK, Shadow first removed his Limiters to boost his Chaos Control as Shadow so he and Super Sonic could sent the Space Colony ARK back into orbit. In the aftermath, Sonic could only find Shadow's Limiter which he gave to Chris who kept it as a memento of Shadow.

During the battles with the Metarex, Shadow would remove his Limiters to gain a power boost several times to combat enemy forces.