Ukamurubasu, known in Japanese as ウカムルバス, is a fictional monster featured in Monster Hunter Portable 3rd. It is an Elder Dragon-class creature, serving as one of the game’s major high-level boss encounters. The monster is portrayed as an ancient, powerful ice-dwelling beast that challenges experienced hunters in the endgame. As a flagship-like late-game threat, Ukamurubasu represents the extreme difficulty and climactic progression of the series’ hunting experience.