B.T.

B.T. is a young boy with an average constitution. He has mid-length hair cut into a regular haircut with a velvety texture. His hair is mostly of light color but his hair becomes dark when it goes down on his cheeks and also on his eyebrows. He has big eyes with large eyebrows and a sharp gaze.↗

Cool Shock Old B.T.

In the first two chapters of Cool Shock Old B.T., B.T. is now an old, tall and lean man. He's kept the same haircut from his childhood and has a thin chin puff. B.T. now wears a dark three-piece suit with a tie with a "BT" print and a bright shirt underneath. His jacket is a plain jacket with a black and white arrow motif on the shoulders and sleeves whose ends are decorated with "X"s and a serrated line. He is briefly seen wearing another dark suit with a bowtie.↗

B.T. is a clever and devious boy, but ultimately a loyal friend. His defining trait is his remarkable intelligence for his age. His favorite pastime is to perform magic tricks, which he performs very skillfully. B.T. loves pulling off elaborate schemes to get back at his enemies, and he's quick to think of plans. His mastery of magic often inspires creative ways to outsmart and defeat his opponents.↗

Confident in his intellect, B.T. sees himself as smarter than most people and has little respect for brute strength. When he plots revenge, he prefers to outwit his foes completely, viewing direct violence like stabbing someone as crude and beneath him. His confidence is paired with fearlessness, and he never hesitates to put his plans into action, no matter how dangerous the adults he's up against may be.↗

B.T. also has a mischievous, criminal streak. He often breaks the law, and refers to his schemes as "capers", an English term he's particularly fond of. He once stole a dinosaur skull due to his fascination with fossils and has since amassed a strange and varied collection of stolen or unusual objects, kept tucked away in his room. In Cool Shock Old B.T., he continues this habit even in his old age, where he's shown with another hoard of bizarre and rare items. B.T. is also motivated by money; he once tried to blackmail his upperclassman Date for a large sum, and later stole jewels with the intent to sell them.↗↗↗

Tricks

B.T. is quite skilled in a number of tricks, from magic tricks to other athletic feats. These tricks help him perform the unexpected against stronger enemies and help him come up with clever plans that ordinary people won't see coming. Among his tricks are the following:↗

Disappearing and reappearing. B.T. is able to make objects disappear or reappear from nowhere in his audience's mind with his great handling skills and prestidigitation skills. He also performs this with handwriting by scribbling on his arm with a pencil and rubbing the spot to make the message appear.↗

Faking a cardiac arrest. Using a ping-pong ball, B.T. puts it under the armpits and presses it, temporarily stopping the blood flow in the arm.↗

Lockpicking. He's knowledgeable in unlocking doors without the keys. For instance, he uses a clamp on a string to latch on to the lock from the inside through the mail slot.↗

Rubber band flinging. B.T. is able to somewhat hide a rubber band on his hand and, by mimicking a shooting gesture, fling the rubber band at his enemy's eyes, blinding them temporarily. He uses this opening to perform tricks.↗

Stone throwing. B.T. uses a stone to attack bullies from a distance with great accuracy.↗

Intelligence

B.T. is fairly intelligent, more than an average kid, and uses his talent to come up with clever schemes. For instance, he manipulates the friction between two of his bullies to have one stabbing the other in anger. He is knowledgeable in a good numbers of topics and has great deductive skill. He once observed a car from afar and, by analyzing the plate, guessed which direction it would take.↗

Beyond his initials, Araki has not given B.T. a full name. Araki used the initials instead of a name to allude to the way reporters refer to underaged criminals in a way such as "Boy A." While B.T.'s initials are meant to be a homage to Buichi Terasawa, Araki also enjoys referring to B.T. as "Boo Takagi", a reference to the lead singer of The Drifters, a Japanese rock band and comedy group.↗↗↗↗

When writing B.T.'s tricks, Araki used a mix of adapted inspirations and original ideas he made up himself. He was also designed to resemble Sherlock Holmes.↗↗↗