Jotaro Kujo is a fictional character from the Japanese manga JoJo's Bizarre Adventure, and the protagonist of Series 3. He is the only JoJo to make an appearance in four different series.
In Part 3, he has a recognizable attire of a blue trenchcoat-length school uniform jacket with yellow chains on the collar. He also wears a trademark hat which, while torn in the back, often seems to blend with his hair. While they are first shown as being completely separate, later publications cause more uncertainty as to where his hat and his hair actually meet.
Jotaro is Holly Kujo's son and Joseph Joestar's grandson. When Jotaro first appears, he turned himself in to the police because he believes his Stand is an evil spirit possessing him. After he is released from jail, and learns what his Stand is, Jotaro gets used to Star Platinum -- a fierce, muscular, vaguely Aztec-looking spirit with "the precision of a machine" and the ability to destroy virtually anything with a sledgehammer barrage of fists. He has a very tough exterior, and is even rather rough and delinquent, but he also is very dedicated, intense, and loyal. He is very intelligent, but usually lets his (or Star Platinum's) fists do the talking with the enemy, even though he often has to rely on his wits to deal with stand users' attacks. He is also known for a quick and short temper. His catchphrase is "Yare yare daze." It generally relates of being bored or exasperation. In Part 3, he is the main target of Dio, who realizes that Jotaro is his greatest threat
One of the strongest stands in the JoJo universe; Star Platinum possesses super human senses, strength, stamina, accuracy and speed. It can see for great distances and at great magnifications. The Star tarot card that Star Platinum is named after symbolizes hope. Like other physically powerful stands, Star Platinum suffers from a narrow range of activity. It can only be active within a 2-3 meter radius from Jotaro.
It is similar to Dio's The World stand, and, it turns out, can likewise be used to stop time, but that ability is only revealed in Jotaro's epic battle with Dio Brando when Dio was about to drop a steamroller on him.
In the sixth story arc Stone Ocean, Jotaro becomes an oceanologist, moves to the United States, eventually marries, and his daughter, Jolyne inherits the potential to wield Stand powers.