|Artwork of Pump Man from Mega Man 10|
He is a robot working in purifying water and due to his neat freak nature, he volunteered to clean grafitti away from neighbourhood walls. However, due to Dr. Wily's Roboenza, he became a dangerous robot.
Pump Man activates the Water Shield. After that, he performs low or high jumps to the player character's direction. If he jumps without moving horizontally and he still has his Water Shield, he will release his shield so the water particles still present orbit while getting further from him while following Pump Man's current direction. After launching it, he activates the Water Shield again.
Each of the Water Shield projectiles can be destroyed by repeated weak shots or by a strong projectile. However, it may be hard to penetrate their security due to their constant rotation. If Pump Man loses the Water Shield altogether, he will not attempt to release the particles and instead will activate the Shield again. If one or more of his Water Shield projectiles and they enter in contact with a Chemical Solution with an acidity type other than 1, they are consumed while diluting the acidity of the Solution.
Similarly to other bosses, Pump Man's jumps are higher if he is underwater.
His movements are inspired on Normal Mode in Mega Man 10.