: A masked killer is on a rampage, having already murdered three bounty hunters.

He first appears in , titled simply " Usagi Yojimbo ," where he is accidentally transported to the Turtles' world via Krang's dimensional portal.

: It features a deadly ninja duel where the character Chizu faces off against Kagemaru and Kimi.

: One of the most talked-about moments involves the giant serpent Lord Hebi intimidating his subordinates with "light cannibalism"—eating a dead serpent out of a sake bowl. Animated Cameos (Season 3)

: Usagi is close to unmasking the villain, but he doesn't realize he is already the killer's next intended victim. Usagi Yojimbo: 35 Years of Covers

While there isn't an Episode 35 starring him, this season established the lifelong "crossover friendship" between the rabbit ronin and the turtles.

While there isn't a single "S3E35" in the Usagi Yojimbo universe, the number 35 is a major milestone for the series, representing decades of storytelling by creator Stan Sakai. Depending on what you’re looking for, here is some interesting content centered on that "35" mark: The "Mystery of the Devil Mask" (Comic Issue #35)

: Over 300 pages showcasing every cover from the very first issue in 1984 up to the end of the Dark Horse run.