Roy has auburn hair with blue eyes. He is tall in stature, around the same height as Aqualad. Due to his rigorous training with Green Arrow, he has become very muscular, most noticeably on his upper body. Because of his rather serious personality, it is uncommon for him to ever smile, instead a frown or a deadpan look being his standard facial expression. Speedy donns a yellow sixteenth century-style hat complete with feather, yellow gloves, boots, belt and a red suit. He always carries a set of red arrows and his bow on his back for easy access aswell.
Unlike Green Arrow's relaxed and friendly disposition, Roy is far more serious and is not at all tolerant of juvenile acts. He is fiery, short tempered and detests being called a sidekick and snaps at anyone who calls him one. Roy is the most brash and outspoken of all the Justice League's pupils. He demands respect, despite his own inability to show respect to anyone else and is also extremely impatient and gives little thought to the consequences of his actions.