Larimar

Larimar, also known as the Ice Monster when corrupted, is a former corrupted Gem and a member of the Crystal Gems that first appeared in "Monster Buddies". She was healed along with the other corrupted gems in "Change Your Mind".

Appearance
In her corrupted form, she possesses a bulky body that is colored varying icy shades of blue. The creature also possesses two, very large arms with four spiky fingers each and two short legs. Her head is carved into five sharp protrusions. She has two dark, hexagonal eyes and a gaping, dark mouth lined with sharp teeth. This monster is slightly taller than Garnet.

Despite this, however, when she is uncorrupted, she is quite small in size (hence her name "Little" Larimar).

In her normal, uncorrupted state, she has a teal complexion, as well as a prism shaped head with three spikes on top. She also has claws, instead of normal fingers (possibly corruption scars). She wears a blue shirt with elbow-length sleeves as well as puffy dark blue shorts and a pair of blue knee length boots with dark blue spots on them. She also wears a round light blue scarf/collar around her neck.

Thousands of Years Ago
Larimar defected from Homeworld, which made her become a member of the Crystal Gems. Later on, she fought in the Rebellion on Earth until its very end, but was unable to escape the Diamonds' Corrupting Light, mutating into a Corrupted Gem upon exposure to the light. In her corrupted state, she found refuge in an ice cavern.

"Monster Buddies"
The Crystal Gems are shown fighting Larimar in the large cavern inside a snowy mountain. She's shown to be preventing them from acquiring a powerful, elemental artifact called the Shooting Star. After her arm falls off, Garnet deals the final blow on her, thus, defeating Larimar. Pearl bubbles her gem and transports it back to the Burning Room. Her gem is seen again when Garnet bubbles Steven to the Burning Room and is later seen again when Steven bubbles Nephrite's gemstone to the room along with the "Chaaaaps".

Steven Universe: The Movie
Larimar, presumably uncorrupted during the events of "Change Your Mind", appears as a resident of Little Homeworld.

Trivia

 * Larimar, as well as a stronger version of her, appear as antagonists in the flash game, "Sword Dancers".
 * In her corrupted form, she bears a resemblance to the Freezies from the Super Mario series, except she has arms and legs.
 * Larimar was the fifth corrupted gem to have her gem name confirmed outside of the series. The previous ones being Orange Spodumene, Blue Lace Agate, Lace Amethyst, and Watermelon Tourmaline.
 * Her boots resemble a real larimar gemstone.
 * Larimar had a redesign between "Change your Mind" and Steven Universe: The Movie, just like Watermelon Tourmaline and Orange Spodumene.

Gemstone
Monstruo de Hielo Lodowy Potwór pt-br: Monstro de Gelo Ледяной монстр