Toguro is a very tall man, standing easily over six feet, being so large that his brother can sit on his shoulders and look vastly smaller in comparison. His appearance is remarkably similar to that of a Southern-European man - unlike his older brother's Northern-European appearance - bearing a noticeable, light brownish skin color. Toguro sports a stereotypical military crew cut hairstyle, and has a long, pointed chin. He is often seen wearing sharp black sunglasses, an olive green trench coat with a green tank top underneath, dark gray pants with a black belt on his waist and black shoes that help to conceal his Olympic-style muscular physique. His sharp black sunglasses were later destroyed when he was hit for the first time by Yusuke's Spirit Gun during the Dark Tournament finals and his eyes appeared to be black instead of hazel. His live-action appearance has minor changes; his military crew cut hairstyle is changed to a short wavy haircut and his entire main outfit is all black except for his tank top which is originally a black muscle tank top. The black muscle tank top that he wears was later replaced by a mesh brown tank top since he rips his muscle tank top to shreds upon releasing his demon energy to kill Genkai. His eyes as a demon are olive after Yusuke knocks his sharp black sunglasses off with his powerful Spirit Punches.
When Toguro releases his demon energy into his muscles, his body becomes greater in size and strength, exponentially gaining the physical strength necessary to lift objects that weigh a number of tons. Before he transforms into that state, he will remove his olive green trench coat or go shirtless by ripping his tank top to shreds when facing both Yusuke and Kuwabara during Yukina's rescue. Upon reaching the full extent of this transformation, Toguro's body becomes interlaced with vein-like muscle fibers. His skin turns gray and his shoulders grow in tremendous size with a pointed appearance whilst also gaining a pair of tube-like appendages coming out of his shoulders. It is hinted that the demonic appearance of Toguro's transformation is derived from Kairen's general design and physique. When he reaches maximum capacity, his pants and shoes are almost entirely ripped to shreds, leaving only the shorts-like remains of his pants and belt, and is left barefoot. When he was finally defeated by Yusuke, his gray skin begins to crack and shatter all over his body as he forcibly reverts to his human form, albeit with broken muscle-like appendages all over his body and his skin turning pale white. His live-action demonic appearance has differences to his anime counterpart. His skin is light brownish in color rather than gray. His pants have large holes on the right thigh and left knee and the edge of his pants are torn and he is barefoot.
When he was human, he was still rather tall and muscular, but had a slightly softer looking face and expressive hazel eyes, without any sunglasses. He wore a dark blue sleeveless martial arts dogi with a sewn-together section at its right shoulder blade, matching dark blue pants, purple sash belt, and violet martial arts shoes. In the live-action adaptation, he has brown eyes and his martial arts dogi and pants are white and both his sash belt and shoes are black.
Throughout the series, Younger Toguro displays a calm, relaxed attitude, hardly ever showing any signs of emotion. His only accentuated facial expressions are present when he is either very happy, usually during an exciting fight, or very angry, against posers and dishonorable people. He mostly speaks plainly and firmly to others, and is never afraid to speak his mind. However, underneath this composed exterior lies a man with a powerful, self-applying and dependable code of personal honor and general morals. Toguro prefers not to take the lives of anyone unless the job demands it, and usually ends up apologizing for his actions afterwards. He is also very loyal to his employer, as long as he is under contract. But while in the presence of individuals who behave dishonorably, cheat, mock, or otherwise do not follow the rules, he displays a ruthless and highly brutal behavioral pattern. For example, during the time of the tournament's finals, in the English dub, Toguro literally kicks his older brother off the island and heavily knocks him into the nearby ocean with one heavy punch after the older sibling sadistically mocks Genkai for her decisions in life in front of the tournament's entire audience (in the manga and Japanese anime version his brother suggested that they cheat, something that personally insulted Younger Toguro, who pointed this out just before he kicked his brother off the island, stating that he had forsaken his humanity but never his honor).
Throughout the Dark Tournament, while it seemed that Sakyo was pulling the strings, it is slowly revealed that Toguro was the real one who manipulated the Tournament to his own ends; he wished to be killed at full strength by Yusuke Urameshi. Toguro's desire for death in mortal combat at the hands of a human being is later revealed to be a philosophical and psychological phenomenon, possibly derived from the trauma caused by the deaths of his students, which occurred many years prior to the beginning of the series. The murderer of his students was the previous Champion of The Dark Tournament, a demon called Kairen. After killing the demon champion during the next tournament, Toguro wished to become a demon similar to Kairen, so that he would never lose his strength because of aging, and so that he himself would one day get killed in the same manner by another human, as a means of repenting for his vindictive actions.
During his trial in Spirit World, Toguro asks that he be sent to Hell (Limbo in the FUNimation dub), insisting that he had thought a great deal about his actions and that no other place would be suited for him - however, Koenma directly tells Toguro that he could receive a much less torturous punishment not only due to Toguro having been a warrior for his entire life but mostly because his actions were never atrocious enough to condemn him to eternal damnation. Still, Toguro does not change his mind and voluntarily goes to Hell/Limbo anyways. Before that, Genkai approaches Toguro and talks about his actions in the Dark Tournament, where she reveals that she considers Yusuke as being the closest thing she had to a son. In his own odd way, Toguro also thought the same way and says that he truly cared about Yusuke.
According to Elder Toguro, Genkai and Younger Toguro were also said to have been very intimate lovers when the latter was still a human. Even though they have severed ties due to the Toguro brothers's wish to become demons after defeating Kairen in the Dark Tournament, something which disgusted Genkai, the Younger Toguro still seemed to harbor feelings for her, despite mocking her old age prior to killing her. This was shown when his brother had insulted her death, after which he sent his brother flying off the island with a devastating kick (or in the case of the manga and Japanese anime version where it was due to his anger towards his brother's suggestion that they try to cheat) and heavily knocked him through the nearby ocean with a single punch when his older brother attempted to attack from behind after his refusal to his brother's assistance.
Despite his strong sense of honor, the evidence suggests that the more of his demon form's power he shows, the less honorable he becomes, going so far as to kill members of the audience, devouring their souls, simply to maintain his highest demon energy levels. In his faux full-power form, he is prepared to do anything, and even pretends to kill Kuwabara, in order to bring out Yusuke's full potential. This is symbolic of the deepening of his soul's corruption.
Fifty years before the start of the series, Toguro, along with his older brother, and Genkai, his "wildcat" of a lover, built a dojo together and had several people attending. However all of this was ruined when a demon named Kairen (translates to "crushing forge"), who was the favored contestant in the Dark Tournament fifty years prior, massacred and swallowed all of Younger Toguro's pupils and colleagues, forcing Younger Toguro into the Dark Tournament as a "guest". For three months Younger Toguro disappeared, but returned the day before the tournament with a formed team; which included his brother and Genkai.
Younger Toguro and Kairen worked their way to the Final Rounds, and they fought each other, with Younger Toguro killing Kairen and coming out as the victor, which would greatly resemble his future fight against Yusuke Urameshi. Younger Toguro's mind, however, had been incredibly warped. When given a chosen prize, both he and his brother chose to be demons, while Genkai, out of anger, wished to never be involved in the tournament ever again.
The Toguro brothers later enlisted their opponents into their group of followers, under the premise that they will one day have a rematch. Sometime after this, the brothers met Karasu and Bui, whom they had easily defeated. Either before or after this, Karasu and Bui had worked their way into Sakyo's forces.
It is also known that during Toguro's life as a demon warrior, alongside his team, he had met the rambunctious, adolescent warrior Tanaka. After defeating his opponent with no more than 3% of his strength, Toguro spared Tanaka's life, referring to him as being spineless and unworthy of being killed by his hands. It was years later that Tanaka had grown up to become Suzuki, leader of Team Uraotogi, and swore to defeat Toguro in a fight. However, Suzuki never made it into the finals, nor did he become strong enough in order to accomplish his goal. Ironically enough, after Toguro was killed, Suzuki gained power to that of an S Class demon during the Three Kings Saga.
When Tarukane kidnapped Yukina, the ice apparition, he hires the Toguro brothers and their demon mercenary group, the Apparition Gang, to help make her cry in order to produce the valuable Hiruseki Stones. Toguro slaps her but with no effect, and she only relented and began to cry when Toguro's older brother had strangled a few of the ice maiden's birds that had befriended her. Before leaving, he tells Yukina that she could make it a lot less painful for herself and simply give up hope.
64591212e2