Yojimbo - [s3e35] Usagi

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

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

If you are thinking of animated appearances, Usagi’s most famous "Season 3" debut was in the cartoon.

: It provides a visual history of how Stan Sakai’s art style evolved while staying true to the meticulous historical detail of feudal Japan. The Homecoming Collection (Volume 35)