|Anime||Naruto Episode #20|
|Movie||Naruto 5: Blood Prison|
|Game||Naruto: Ultimate Ninja 3|
|OVA||Finally a clash! Jōnin vs. Genin!! Indiscriminate Grand Melee Tournament Meeting!!|
|Appears in||Anime, Manga, Game and Movie|
Udon is an easy-going and quiet individual. He usually looks 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 idolises 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.
Udon had short brown hair and dark eye. He is characterised by the drip of snot always seen hanging from his nose. While in the Academy, he wore a simple blue shirt which zipped up the middle, a pair of brown pants, sandals and a pair of goggles to represent his membership in the Konohamaru Ninja Squad. In Part II, he has grown noticeably taller, and wears a black top and blue pants with regular shinobi sandals. Instead of goggles, he now wears the village's forehead protector.
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.
Kazekage Rescue Arc
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
Main article: Twelve Guardian Ninja Arc
Hidan and Kakuzu Arc
In the anime, 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. They are later seen helping in the efforts to rebuild the village.
Konoha History Arc
Main article: Konoha History Arc
Five Kage Summit Arc
In the anime, Udon runs to Moegi and Konohamaru announcing Naruto's return to the village. He is disappointed when Naruto delays their interview with them.
Adventures at Sea Arc
Main article: Adventures at Sea Arc
Naruto 5: Blood Prison
- "Udon" is also a type of Japanese noodle.
- Children shown on a Ben 10 Christmas-themed episode greatly resembled Team Ebisu.