Arms is a short robot. He has a small head with black eyes and a mouth that is constantly open, revealing white teeth. His torso is also very short. He also has two thin and long arms with claws at their ends, as well as two thin legs.
In the Adventures of Sonic the Hedgehog television series, Arms is an orange robot with yellow stripes, while in both versions of Dr. Robotnik's Mean Bean Machine, he is red with yellow stripes. In the television series and the 8-bit version of Dr. Robotnik's Mean Bean Machine, he has black eyes with light green sclera, while in the 16-bit version of Dr. Robotnik's Mean Bean Machine, he has black eyes with white sclera.
In the recent past, Dr. Robotnik gathered many of his old bounty hunter Badniks, including Arms. The doctor told them that he wanted them to catch Sonic, and if they did, he would give them one billion Mobiums. Immediately afterward, all the Badniks headed out in an attempt to catch the hedgehog when he revealed himself. Along the way, Dragon Breath told them to split into different groups to catch Sonic. Arms went with Davy Sprocket. When they found Sonic, he had them hold onto a rope and made them crash into a mountain, destroying them both.
Dr. Robotnik's Mean Bean Machine
In the 16-bit version and 8-bit version of Dr. Robotnik's Mean Bean Machine, Dr. Robotnik assembled many of his old bounty hunter Badniks, including Arms, and told them to kidnap the Beans that inhabited Beanville so he could turn them into robot slaves using his Mean Bean-Steaming Machine. Later, Arms was the first Badnik Has Bean battled and defeated.
Arms is an unintelligent robot, who can easily be tricked by his enemies. According to Frankly, he also gets very wrapped up in himself to do something useful. However, he also tries to serve Dr. Robotnik to his fullest, as he wanted to make a Bean feast for him.
In contrast with his stupid nature, Arms is a very violent robot, who carries out his leader's orders without question. As a bounty hunter, he also loves money, and will do whatever he can in order to earn tons of Mobiums.
- In Dr. Robotnik's Mean Bean Machine, Arms has the same AI as Draco Centauros from Puyo Puyo, the game on which Dr. Robotnik's Mean Bean Machine is based.
- On page sixty-five of Sonic the Hedgehog 30th Anniversary Special, Arms makes a cameo on the cover of a magazine.
- Shelly, Bruce; Shelly, Reed (19 October 1993). "Super Special Sonic Search & Smash Squad". Adventures of Sonic the Hedgehog. Season 1. Episode 1.
- Compile (November 1993). Dr. Robotnik's Mean Bean Machine. Sega Genesis. Sega. Level: Frankly cutscene. "Frankly: Arms is always too wrapped up in himself to do anything useful. I'm a bright spark, though, and I reckon I know how to beat you."