Stone is an average sized man with black hair and brown eyes. He bears visible facial hair. For attire, he is usually seen wearing a black jacket, navy shirt and a black tie.
Sonic the Hedgehog
Agent Stone accompanied Dr. Robotnik to investigate the electromagnetic pulse caused by Sonic in Green Hills. He "translated" Robotnik's words for Major Bennington as he asserted dominance and began the investigation. He is later present when Robotnik analyzed Sonic's footprint. Soon, after Tom Wachowski punched Robotnik in the face and escaped with Sonic, Stone rushed into Tom's house to help Robotnik. However, he is humiliated by Robotnik for not chasing Tom's truck instead, and Stone took Sonic's leftover quill before the two departed. Later, when Tom called the Green Hills Sheriff Station, Robotnik, Stone, and the other agents were present to monitor the call. Stone also accompanied Robotnik to interrogate a bar patron who encountered Tom and Sonic. When they took their leave, Robotnik tricked Stone into believing he would get a high five and was punched in the gut instead.
Later on, Stone watched as Robotnik remotely piloted his drones to chase Tom and Sonic. After the drones were destroyed, Robotnik began to vent his frustrations on Stone before noticing Sonic's quill and started to analyze it instead. As Robotnik jammed to music and finished analyzing Sonic's quill, Stone brought him a latte, accidentally sneaking up on him and scaring him. He is then told to prepare the Eggpod.
Agent Stone is a relatively normal and level-headed man, contrasting greatly with his eccentric boss. He is used to Robotnik's antics and understands him better than most other people. He is very subservient to Robotnik, taking abuse and doing humiliating things for him without question. He also seems to genuinely care about or admire Robotnik to some extent as well, thoughtfully bringing him a latte while he works, for example.