Who do think is the oldest living character in Naruto, here are the following character in no particular order:
(オオノキ, Ōnoki)
Third Tsuchikage (三代目土影, Sandaime Tsuchikage)
Ōnoki of Both Scales (両天秤のオオノキ, Ryōtenbin no Ōnoki)
(フカサク, Fukasaku) Head (頭, Kashira)
(シマ, Shima) Mother of the...