Quote Originally Posted by Psyke
My vote, however, would go to Zabuza. He's been through a lot, way more than any of the Konoha ninjas.
Really? I thought Zabuza always thought of his childhood as happy times. Of course, those happy times were just him slaughtering the graduating class of the Mist Villiage, but hey - it's Zabuza. He enjoyed it. He hasn't been through anything very traumatic or troubling apart from he and Haku's deaths.

Roughest childhood? I say it's a tossup between Gaara and Sasuke in terms of loss, Gaara and Naruto in terms of lonliness/ostracization, or between Lee and Neji in terms of just being fucked over by life.