Teuchi

is a citizen of Konohagakure and the owner of Ramen Ichiraku.

Personality
Teuchi is a very kind and jovial man. Often seen smiling, he and his daughter, Ayame, have always treated Naruto Uzumaki well, considering him their best customer, sometimes even giving him free ramen on special occasions. Nevertheless, he is a stern businessman and will lash out at his employees when they make mistakes such as sticking their thumb in a bowl of ramen. He has also been described as stubborn, obstinate, and having the temperament of a craftsman.

Chūnin Exams
The day before the third stage of the Chūnin Exam, Teuchi and Ayame served Naruto a free and expensive bowl of Ramen as a way of saying thank you for being their favourite customer and a way of saying good luck.

Search for Tsunade
He witnesses Jiraiya and Naruto head off to Shukuba Town, and is later asked where they went by Sasuke.

Mix it, Stretch it, Boil it Up! Burn Copper Pot, Burn!
In the anime, Teuchi tries to make a new ramen after he finds out that his daughter Ayame was kidnapped by Hakkaku, who wanted Teuchi's recipe. Naruto, Chōji, and Sakura offer to help him. Teuchi tries to teach them how to cook ramen. When they confront Hakkaku and his cooking-nin, the three take advantage of their ninja techniques to make the perfect bowl of ramen. After Hakkaku and the cooking-nin ate the best ramen, Teuchi explains that the recipe was just to remove the bitter taste from the soup. When they rescue Ayame, they became shocked as they noticed she has grown fat due to being unable to resist the cooking-nin's food, much to Teuchi's dismay. After saving his daughter with the help of Naruto, Sakura, and Chōji, he develops a diet for Ayame to bring her to her regular self and the diet ramen appears to be part of the menu for the customers to lose weight from eating it. Also, he had ate the diet ramen, however he lost too much weight, much to Naruto and the others' shock from seeing him.

Twelve Guardian Ninja
During the large scale power outage he went outside Ichiraku and accidentally hit two villagers in the head. He stated that the Hokage can handle the issue and not to worry.

Akatsuki Suppression Mission
After Naruto managed to cut the waterfall in his wind natured chakra training, he was treated to some ramen at Ichiraku. However Teuchi kept rejecting the ramen made by his apprentices Matsu and Nishi before Naruto could eat it, and was quickly getting angry with them, claiming that they kept making these stupid mistakes.

Itachi Pursuit Mission
In the anime, Teuchi is seen working behind the bar with his daughter, Ayame, while Naruto and Jiraiya discuss about dealing with Itachi and Sasuke.

Fourth Shinobi World War: Countdown
Soon after Tsunade regained consciousness, Sakura burst into Ichiraku to inform Naruto and Teuchi about what happened. Upon hearing the good news, Teuchi offered a bowl of ramen to both Naruto and Sakura, on the house, which Naruto accepted, but Sakura declined. Just as Naruto was about to eat he was reverse-summoned to Mount Myōboku, much to Teuchi's confusion. When Naruto reappeared in Ramen Ichiraku, Teuchi asked where his best customer disappeared to. When Naruto was asked by the other ninja customers for his autograph, Teuchi thought proudly at how Naruto was being called the "Miracle boy" and at the irony at how not so long ago he was thought of as the opposite. Teuchi then asked the other customers to allow Naruto to finish his meal before he signed anything.

The Last: Naruto the Movie
During the Rinne Festival, Teuchi made ramen for Naruto friends and fans, proclaiming it's on Naruto himself. After Toneri Otsutsuki's defeat, Teuchi later hears the worldwide announcement about the Moon crisis being averted amongst many other villagers.

Konoha Hiden: The Perfect Day for a Wedding
Teuchi reflects on how good business has been at Ichiraku Ramen recently and how the naruto topping has seen a reversal in popularity: once it was the least popular, easily eclipsed by seaweed; now seaweed, though still popular, is second to naruto. In fact, Teuchi cannot prepare enough naruto to meet demand. The reason for this is because of Naruto Uzumaki's importance to Konoha, with standard customers craving naruto whenever there is news of Naruto and with shinobi hoping that eating at Ichiraku Ramen will bring them the same success on their next mission as Naruto has always had on his.

Teuchi has been serving Naruto since he was a boy, back when most of the village hated and despised him. Teuchi didn't care what the rest of the village thought of Naruto; Naruto loved ramen and Teuchi loved preparing it for him. Since ramen has been the extent of their relationship all these years, Teuchi is surprised to be invited to Naruto's wedding. He decides nothing else would be appropriate to give to Naruto other than free ramen for a year. Teuchi then realises how much ramen Naruto can eat and starts decreasing the duration of the offer, but every span of time he considers leaves him with visions of Ichiraku Ramen going bankrupt and his daughter being put out on the street. He also has visions of Naruto's smiling face whenever he finishes a bowl of ramen. Teuchi settles on giving Naruto free and unlimited naruto for the rest of his life.

Teuchi is last seen at Naruto and Hinata's wedding, using his daughter to attract business for Ichiraku Ramen.

Naruto Shippūden the Movie: The Will of Fire
He is seen when Naruto is at Ramen Ichiraku after he escaped from the hospital.

Naruto Shippūden the Movie: The Lost Tower
Teuchi is seen in a flashback, on Ramen Ichiraku grand opening, twenty years in the past. The first day seemed to be a success, as he had a huge line of customers impatiently waiting for his half price ramen.

Trivia

 * Teuchi first made his appearance in the official series in a short omake, published in the first databook. However, he had appeared before in the pilot of Naruto, making him one of the earliest appearing characters from the series, together with Naruto Uzumaki himself and an early version of Hiruzen Sarutobi. His first appearance in the actual manga was in chapter 144.
 * According to the databook(s):
 * Teuchi's favourite word is.
 * Teuchi's name can mean . However, the same word can also mean "killing someone with one's bare hands."
 * In the third databook, Masashi Kishimoto joked that when Teuchi got mad at the two new cooks, it wasn't a Lightning Release technique he used.