Re-class Senkan, known in Japanese as 戦艦レ級 (Senkan Re-kyuu), is a formidable Abyssal Fleet battleship in the Kantai Collection (KanColle) universe. She is recognized for her distinct skeletal design, large shark-like mouth, and powerful armament. As an enemy boss, Re-class presents a significant challenge to players due to her high speed, heavy firepower, and resilience. Her unpredictable nature and menacing appearance have made her one of the most iconic and feared adversaries in the Kantai Collection series.