Naruto Episode 146, titled (Remaining Ambition: Orochimaru's Shadow) in the Latin American Spanish dub, is a critical installment in the Mizuki Tracking Mission filler arc. The episode explores the deeper connection between the traitorous Mizuki and the primary antagonist Orochimaru, culminating in a monstrous physical transformation. Plot Summary
Meanwhile, Shikamaru, Ino, and Chōji struggle to hold off the legendary stupid brothers, Fūjin and Raijin, primarily stalling for time as they are outmatched. Naruto Latino Episodio 146
While there is an episode 146 in Naruto Shippūden titled "The Successor's Wish," it focuses on Utakata and the Tsuchigumo clan. Naruto (Dubbed) S03:E146 - Orochimaru's Shadow! - Tubi Naruto Episode 146