Tearlaments Kitkallos is a mermaid/siren-themed monster in the Starfrost storyline. Her followers include Tearlaments Scheiren, Tearlaments Merrli, and Tearlaments Havnis.
Tearlaments Kitkallos was brainwashed by Tearlaments Reinoheart until she stood up to him as Tearlaments Rulkallos and killed him. She was converted into Tearlaments Kashtira by Kashtira Riseheart until Visas Starfrost was purified into Visas Samsara, who fused the worlds together. As a result, she became Mannadium Trisukta.
There's a running gag in her fan art where she loves to snack on Instant Fusion noodles, which is a nod to how Instant Fusion is used to cheat out herself or El Shaddoll Winda in Tearlaments decks.
She's often paired up with Visas Starfrost since many believe her to be the heroine of the Visas Starfrost storyline.
This tag implicates kitkallos_(yu-gi-oh!) (learn more).