Frost made her first appearance in Mortal Kombat: Deadly Alliance as Sub-Zero's apprentice, fitting the character archetype of the overly ambitious fledgling. Her dedication to fighting and learning is overshadowed by her desire to be noticed, and a corresponding hostility towards anyone she perceives to be greater than her, including her own master.

In the second timeline, Sub-Zero made historic peace with his clan's enemy, Scorpion. Frost, shocked at this decision, challenged her Grandmaster, deeming him unfit to lead. Sub-Zero defeated her, however, and banished her. For years, she sought the power to destroy him.

Her chance at domination arrived when Kronika enlisted her in order to help her reset the timeline, promising Frost that she would lead the Lin Kuei, not Sub Zero. Frost was heavily cyberised by Kronika, helping Sektor and Cyraxrestart the Cyber Initiative in accordance with Kronika’s plan. She was used by Raiden to interface with the other cyborgs, shutting them down and removing the threat they posed to his resistance against Kronika.

Most of her personal flaws appear to stem from jealousy and feelings of inadequacy. Although she was ostensibly on the side of good at the time of her introduction, Frost's desire for recognition causes her to betray Sub-Zero (in both timelines) and join the side of darkness.