Udon Ise

is a genin-level shinobi of Konohagakure, and together with his friends, Konohamaru and Moegi, a member of Team Ebisu, under the tutelage of their jōnin-sensei, Ebisu.

Personality
Udon remains with the same personality, and facial expressions throughout the series. He appears to be very sleepy, and is always seen with a drip of snot hanging from his nose. Udon has stated many times that he loves math, as he is sometimes seen writing math problems during class. He idolizes Sasuke, stating that he would like to be like him when he gets older. He is rarely seen in the anime or manga, only making a few appearances alongside Konohamaru and his fellow comrade Moegi. His abilities beside the Sexy Techniques, remain a mystery.

Part I
He was seen with Konohamaru and Moegi before the Chūnin Exams when Temari and Kankurō were for the first time introduced. In the Invasion of Konoha Arc, he is seen with Konohamaru and Moegi as they are with the other civilians being protected during invasion. He also makes other future appearances with Konohamaru and Moegi, including in some filler arcs when they are assigned to be led by Naruto in going on a mission against other teams in episode 158.

Part II
In Part II, Udon has already been promoted to a genin in a team with Konohamaru and Moegi under the supervision of Ebisu. He was a witness to the return of Naruto to Konoha with Jiraiya. Called for a mission with his team, he was also troubled when Tsunade mistakenly said that they were going on a S-rank mission.

Twelve Guardian Ninja Arc
In the anime, Udon was shown with Team Ebisu when the enemy began attacking. He was told to escort people to safety; as Ebisu claimed, it was his first A-rank mission.

Hidan and Kakuzu Arc
He appears again, when Konohamaru was demonstrating his Sexy: Girl on Girl Technique. He witnesses Moegi beating Konohamaru up, for creating such a perverted and seemingly useless technique, and he is visibly troubled by his team-mate's injury. In the manga, Sakura is the one to punch Konohamaru.

Invasion of Pain Arc
During the invasion of Pain, he is seen along with Moegi eating at the dango shop when they notice the explosions. He is then seen again along with Moegi and Konohamaru discussing what they can do during Pain's invasion and they decided that their best option is to help the villagers evacuate to a safer place.

Konoha History Arc
Konohamaru, Udon and Moegi ask Neji Hyūga about Naruto's accomplishments over the years for a report they are doing about him. They then sit and listen to Neji as he tells them a story about Hinata Hyūga, who was kidnapped during the Invasion of Konoha.

Five Kage Summit Arc
In the anime, Udon runs to Moegi and Konohamaru announcing Naruto's return to the village. He is dissapointed when Naruto delays their interview with them.

Naruto 5: Blood Prison
During Naruto's flashback to the members of the village when he was gathering natural energy to enter Sage Mode, Udon can been seen amongst the villagers.

Trivia

 * "Udon" is also a type of Japanese noodle.
 * Children shown on a Ben 10 Christmas-themed episode greatly resembled Team Ebisu.