The Pirate is a class introduced in Disgaea 5: Alliance of Vengeance. This class has an interesting feature that changes how he works as a gunner. Normally classes that use guns have to get somewhat close because of the gun loses effectiveness when further away.
A Pirate actually reverses this due to his unique Evility, Accelerated Shot, which increases the damage for each tile between the unit and enemy by 15%.
“A seafaring conqueror who blasts enemies from a distance.”
—Short in-game description
“These guys sail the great seas of the Netherworlds. In addition to seeking treasure, Pirates plunder ports, and have been known to steal from the rich and give to the poor, depending on the flag that's flying. They specialize in ranged weapons, looking to fire the first salvo.”