Haku appeared in 2015 videogame called Monster Legends. Haku was a good ninja but his ambition drove him mad. He traded his arms for blades and his whole body became steel, including his heart. The only thing he knows now is a thirst for killing.
Haku is a powerful and fast attacker with the skillpool of applying Metal Weaknesses, removing energy, and stealing life from enemies. He has nice speed, and amazing power, but has some cons that keeping him back from higher ranks.