Takumi Aiba is the male protagonist of Digimon Story: Cyber Sleuth and a supporting character in Digimon Story: Cyber Sleuth - Hacker's Memory. Before his default name was revealed, he was referred to as Protagonist (主人公, *Shujinkou*) in news articles. His chat room nickname is AI◎BA. Takumi's first name can be changed to whatever the player wants but his surname will always remain Aiba. Takumi is a teenage boy with fair skin, red spiky hair, and blue eyes. He wears a black shirt under a gray shirt with a yellow "◎" logo in the front with an yellow "AWA STUDIO WORKS" written under it, a yellow "X" in the back, and yellow lines near the hemlines, and single black glove with similar X and ◎ designs in the back and palm, respectively, and yellow circles in the fingertips in the right hand. He also wears yellow pants, black sneakers with yellow soles, two gray bags with yellow lines on his waist, with the straps forming an "X", and blueish gray goggles on his head."