Ibiki Morino

is the examiner for the first part of the Chūnin Exams, and head of the Konoha's ANBU Torture and Interrogation Force.

Background
Sometime before the start of the series Ibiki hosted a portion of a chūnin exam in which he failed his younger brother, Idate; later saying he wasn't fit to be a shinobi. Later after his brother left the village Ibiki uncovered a plan to steal a secret jutsu scroll and the Sword of the Thunder God by Aoi, Idate's sensei and his little brother to which he and two fellow ANBU members gave chase after the two. However, Aoi quickly brought in Amegakure allies to capture Ibiki and eliminate the two ANBU members with him. Aoi then tortured Ibiki to read the scroll, in the process accidentally setting the building on fire after Ibiki managed to free both himself and his little brother. However, despite Ibiki's fierce efforts, the flames soon separated the two siblings. Believing his brother dead Ibiki was forced to return to the village alone.

Appearance
Ibiki has a large, imposing figure, which he complements with a rugged head and face covered with old wounds and scars. Ibiki's head is always covered to hide a collection of burn marks, punctures from where screws were used, and long slash marks. The scars are indicative of the physical torture he has endured in the past, and illustrates his capacity to endure pain without giving up the desired information to the enemy.

Personality
Ibiki is the commanding officer of the, and is the designer of the Chūnin Exam's first test. Described as a sadist by some, Ibiki has the ability to subject people to great suffering without ever using physical torture. His interrogation skills rely solely on his ability to torture the mind. He has complete knowledge of human psychology; by attacking a person's mind, he can gain control over their spirit.

Chūnin Exam arc
Ibiki is the first examiner of the Chūnin Exams, testing his students during the written exam with questions too hard for any Genin to answer. Therefore Ibiki secretly put two Chūnin into the crowd to answer the questions and to make other Genin try to cheat off of their exams. Although the point of the test was to test the participants' information-gathering skills, Naruto Uzumaki did not realize this. Nevertheless, Naruto was able to pass the exam without answering a single question, a fact Ibiki took great interest in.

Invasion of Konoha arc
Ibiki later guarded Konoha's borders during the invasion of the village by Sunagakure and Otogakure. He recounted to his colleagues the dark past of Orochimaru, and greeted Jiraiya when he came to their aid.

Land of Tea arc
He appeared again in the Land of Tea in anime, meeting with his younger brother Idate again for the first time in years.

Hidan and Kakuzu arc
He interrogated Kakuzu's bounty-hunting contact in order to gain information on Akatsuki.

Invasion of Pain arc
Jiraiya later sent him a prisoner from Amegakure. When his interrogation methods proved ineffective, he called on Inoichi Yamanaka's assistance, and ultimately distracted the Akatsuki leader, Pain, in order to give Inoichi time to complete the job.

Fourth Shinobi World War
When Karin was taken by Kakashi Hatake to the village, Ibiki and his ANBU colleagues interrogate her about everything she knew about Sasuke Uchiha and Kabuto Yakushi.

Trivia

 * "Morino Ibiki" means "a snore in the forest", which clearly refers to his resemblance to a big bear.