the first that springs to mind is Yamanaka Inoichi of course, but I think Akimichi Chouza might actually do better with his less severe looks - and his old team mate for advice and backup as needed. The main problem with finding a canon character to take them is we barely see any besides enemies, the other team senseis, chuunin and special jonin, Jiraya and Tsunade. The clan kids' parents are little more than names and faces in maybe half a dozen panels, if you're going to use one it's almost an OC anyway.
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows