Peridot

Peridot is a villain from Steven Universe.

She is voiced by Shelby Rabara.

Peridot is a Gem who uses much more advanced technology than the other Gems, and aslo appear to be naive and a ruthless advasary.

Gem Destabilizer
A weapon used to subdue and destroy a Gem's physical form. Steven has no effect from this due to being half Gem and half Human.

Finger Screen
Peridot is able to detatch her fingers and have four of them project a holographic screen.