|"The Ocean Bottom's Guardman"|
|Rōmaji||Kaitei no Gaadoman|
|FUNimation||Beware of Robot|
|Arc||Red Ribbon Army Arc|
|Manga||Chapters #75 & #76|
|Japanese||February 18, 1987|
|English||March 13, 2002|
"The Ocean Bottom's Guardman" (海底のガードマン, Kaitei no Gaadoman; FUNimation "Beware of Robot") is the fifty-first episode of the Dragon Ball anime.
Gokū and Kuririn fight the Pirate robot in between evading its heavy machine gun and sword. Kuririn manages to disarm the sword from it. General Blue stays in hiding watching the fight. Bulma fires a gun cannon on the robot as it skis across a pool. As Gokū fights the robot with his power pole, Bulma rams a truck on it. Next, the robot drags Gokū into an underwater battle, Gokū narrowly escaping. The robot chases Bulma and Kuririn through the hideout where all the pirates are dead. Gokū recovers and rescues the other two. Gokū performs an aerial attack smashing the robot. As everyone makes their way through the inner halls, the place begins to collapse. Gokū takes a different route from the others. Bulma, Kuririn and General Blue dive into a well.
|Role||Seiyū||FUNimation dub Voice Actor|
|Son Gokū||Masako Nozawa||Stephanie Nadolny|
|General Blue||Toshio Furukawa||Sonny Strait|
|Bulma||Hiromi Tsuru||Tiffany Vollmer|
|Kuririn||Mayumi Tanaka||Laurie Steele|
|Narrator||Jōji Yanami||Brice Armstrong|