Teuchi

is the owner of the Ichiraku Ramen Bar. He and his daughter, Ayame, consider Naruto their best customer and always treat him well.

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

Boiling Pot arc
In the anime, Ayame was kidnapped by Hakaku, who wanted Teuchi's recipe. The recipe was just to remove the bitter taste from the soup.

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.
 * Teuchi's favourite word is.
 * Teuchi's name can mean . However, the same word can also mean "killing someone with one's bare hands."