The Raptor is one of the more powerful enemies in the game. They have a decent amount of HP and high stats, and fight identically to the other Raptors in the game, running about the area quickly and then leaping at the player to attack. Charged attacks to pierce their defenses are most effective. The Dog's Level 3 attack is particularly effective; the first hit will knock the Raptor back, making it more likely the rest of the barrage will hit a second time afterward.
The player doesn't get much experience or money for fighting the Raptors, so it's a waste of time to fight them in the Boiler Room if the player is able to keep them contained.