Submarine Guy is a species of Shy Guy appearing in Yoshi's Story. He is shown to pilot a submarine and fires torpedoes as an attack. They are invincible. They appear exclusively in the first level of the fifth world, Lots O'Jellyfish!. They are similar to the power up that Yoshi can get, the Yoshi Submarine that appears in Super Mario World 2: Yoshi's Island.
- Yoshi's Story (Nintendo 64)