Atacamite

Atacamite the Crystal gem came to earth during Steven's violent rebellion against the Diamonds. She is quite fond fond of wildly swinging around her halberd (imbued with the power to steal shoulder pad, nose, and leg length) wildly, and with reckless abandon. She was instrumental in the battle which ended in the death of Small Diamond, but in the process she poofed Clownmerald, leading to her and Grossular hating each other.

In the aftermath of the destruction of Homeworld, she returned to earth and became a belligerent criminal who assaults gems in alley ways and steals their length.