Some age/exam-graduation information numbers...
So I looked up all the main ages and graduation dates for the most commonly referenced ninja in the fanbase(s) I frequent. I did this (supposedly) as research for Hounding the Fox a story I'm thinking of actually finishing, and I got totally distracted.
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Matching Graduation Dates:
Academy Graduation
Asuma, Shizune, Kurenai, Ebisu
Itachi, Genma
Chuunin Exam
Gai, Asuma
Genma, Itachi
Shizune, Kurenai
Of course, this is only the known graduation dates--many characters do not have graduation dates listed.
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I found the various ages of people to be interesting (especially considering the fandom which surrounds them). There are more than several characters not listed here (for instance: Tatami Iwashi who is 37), but I found that they were... unimportant for what I was wondering about. Same with characters who are dead: I was wondering about them as children so their current 'dead status' didn't really matter.
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Listed Ages
Hyuuga Hiashi - 42
Nara Shikaku - 41
Aburame Shibi - 39
Akumichi Chouza - 38
Yamanaka Inoichi - 38
Namiashi Raidou - 35
Shiranui Genma - 34
Yamashiro Aoba - 34
Ebisu - 32
Morino Ibiki - 31
Sarutobi Asuma - 31
Shizune - 31
Uchiha Itachi - 31
Yuuki Kurenai - 31
Hatake Kakashi - 30
Maito Gai - 30
Touji Mizuki - 29
Hagane Kotetsu - 28
Kamizuki Izumo - 28
Umino Iruka - 26
Yamato / Tenzou - 26
Mitarashi Anko - 24
Yakushi Kabuto - 23
Inuzaka Hana - 18
**Inuzaka Tsume does not have a listed age. I found this inordinately funny. Evidently, a woman does not reveal such things (although she probably falls between 37 and 42 if the other 'parental figure' ages are consistent).
Other Stuff
Most minor-character medic-nins are between the ages of 25 and 30.
Temari has a weasel summon. I had totally forgotten.
Iruka and Kakashi have the EXACT SAME Stamina/Chakra Reserves. ^_^
Iruka totally sleeps with his forehead protector on. *gigglesnort*
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Missions
Academy Students and Kages do not run missions.
Genin run D and C Rank missions.
Chuunin, C and B.
Special Jounin, do A and B.
Jounin run A and S.
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Maxed Stats*
(The best of the best according to the known stats of both the living and the dead. Although I'd venture a guess that these are not up-to-date.)
Ninjutsu
Jiraiya, Orochimaru, Chiyo, Tsunade, Itachi, Sasori, Kakuzu, Deidra, Hidan, Sandaime, Kakashi, Sasuke, Gaara
Taijutsu
Rock Lee, Gai, Kimimaru, Tsunade, Hyuuga Hiashi, Sandaime
Genjutsu
Orochimaru, Itachi, Kurenai, Sandaime
Intelligence
Shikamaru, Orochimaru, Chiyo, Tsunade, Itachi, Sasori, Sandaime, Kabuto, Kakashi
Force
Gai, Tsunade, Kisame
Speed
Gai, Itachi
Stamina (& Chakra Reserves)
Jiraiya, Gai, Sasori, Kisame, Hidan, Naruto, Gaara
Seal Knowledge
Orochimaru, Hyuuga Hizashi, Shizune, Itachi, Hyuuga Hiashi, Sandaime, Kabuto, Kakashi
*(Closeness only counts in Horseshoes and Hand-Grenades.)
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Which means...
The Sandaime, and Itachi tied at being maxed out in 5 different areas.
Orochimaru, Tsunade and Gai tie in 4 different specialties.
Sasori, and Kakashi tie in 3.
Jiraiya, Chiyo, Hidan, Gaara, Hyuuga Hiashi, Kabuto, and Kisame have 2.
And the rest is history....
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<3 Gai. Haha.