Flame Stag is a minor antagonist from Megaman X2. He is a Reploid who was once a Maverick Hunter in the 17th unit but defected during Sigma's first rebellion and had vanished until the emergence of the next rebellion. He operates within an active volcano intent on causing an eruption and using the ash to block out the sun.

Based on a deer, he has a humanoid build aside from his head resembling a deer. His orange robot body sports blue and white armor on the torso, arms and legs which also have air vents to release flames including atop his head which it's flames appear as antlers. His muzzle is white and his eyes are red with similar colored markings around them.

As a fire-based Reploid his skills center around using fire, able to shield himself with them and create trails left behind with the use of "Speed Burner" either as a projectile or engulfing himself. Given the animal he's based on he is also agile. In an act of desperation his flames become blue which also enhances his fighting performance.