Ocean Jasper

The Snow Monster is a Corrupted Gem Quartz that first appeared in the episode "Gem Hunt". She was held captive by Jasper until "Earthlings", where she was forced into a fusion and sequentially fled after breaking apart from it. Her location and status are currently unknown.

Appearance
The Snow Monster is a giant wolf-like creature with two horns. She has a mixture of turquoise-blue colors, with pink spots across her body, similar to Ocean Jasper. Though her original uncorrupted form is unknown, Jasper believed her (and, by extension, the similar Orange Great North Monster) to be a Quartz Gem like herself.

History
In "Gem Hunt", she and the Orange Great North Monster are shown roaming the Great North and trying to evade Jasper. She is eventually found, poofed, and taken prisoner by Jasper alongside the other monster.

In "Crack the Whip", she and the other monster are used in an attempt to attack the Crystal Gems.

In "Earthlings", she is shown imprisoned in the Beta Kindergarten alongside the rest of Jasper's corrupted army. Jasper attempts to force a fusion with her to battle Smoky Quartz, but she breaks apart from the fusion and flees from Jasper.

Fusion
When fused with Jasper, they form the Corrupted Jasper Fusion.

Trivia

 * It was confirmed at New York Comic Con 2016 that the Snow Monster and similar corrupted Gems are types of jasper.
 * The Snow Monster is the first corrupted Gem to fuse with a non-corrupted Gem (Jasper).
 * The Snow Monster is the first known corrupted gem to fuse with any other gem.