The Snail-Man's Human Experiments! (カタツムリ人間の人体実験！ Katatsumari Ningen no Jintaijikken!) is the forty-second episode of Kamen Rider V3. It is the last episode with the theme Shōnen Kamen Rider Tai no Uta, which served as the ending theme of V3 since the first episode, it would be replaced by "Hashire Hurricane" from the following episode to the series' end. It is also the last episode with the original version of the Kamen Rider V3 opening sequence, though the opening theme "Tatakae! Kamen Rider V3" itself would remain.