Peridot

Peridot (specifically Peridot Facet-2F5L Cut-5XG) is a member of the Crystal Gems who made her debut in "Warp

Tour". She was originally a Homeworld Gem technician and a certified Kindergartner. After being stranded on Earthfollowing the events of "Jail Break", she acted as a recurring antagonist until becoming more of an anti-hero and pseudo-antagonist by establishing a truce with the Crystal Gems in "When It Rains" to help them save the Earth from the Cluster. She officially became a member of the Crystal Gems in "Message Received" after she defied and insulted her Homeworld superior, Yellow Diamond. For some time she lived in the barn with Lapis Lazuli. However, as of the events of "Raising the Barn", she resides in Steven's bathroom. She was poofed by Yellow Diamond in "Reunited".