Killer Frost

Louise Lincoln/Killer Frost is a character from Justice League and is a minor antagonist in Knights of the Multiverse Season 2. She's a metahuman with ice powers that works with many other supervillains and criminals in the Secret Society, and was a part of those that joined up with the Glemy Faction in a bid to conquer the known Multiverse.

Personality
Frost is motivated by a base desire to kill people and doesn't really care who she serves so long as she's afforded the opportunity to do so.

Skills & Powers
Killer Frost could generate waves of freezing energy that created ice from thin air. She could use these ice waves to create ice around her targets, or to create a ramp that allowed her to slide rapidly through mid-air. She can also generate/control icebergs and ice projectiles.
 * Ice Powers

Lorelai Heinrich
As another ice user, Frost and Lorelai formed a.... sort-of rivalry (honestly, Frost couldn't cared less about the little pipsqueak).