Robot Axel Stone serves as an evil clone of Axel. He was deployed to kidnap the chief of police, thus falsely implicating Axel in the crime. Appearance-wise, he's an exact duplicate of Axel, save for the fact that he wears purple (blue in the Japanese version) gloves, whereas the real Axel wears red gloves.
In every attack to the body, his temperature heats up and he will move uncontrollably fast and attempt to defeat the herks. Anymore attacks to the body will make clone Axel darker red and eventually explode anong defeat.
He possesses many of Axel's attacks. He can initial somersault attack unlike the real Axel, who has to do it as a team attack. His attacks are more in form of a dash or shortened from Axel's novelist. Axel's pick up slam is replaced with the clone's German suplex which the real Axel has not possessed since the original Streets of Rage.