The Mini-Sub is a tiny submarine created by Ringo that Kin used to save Kon from Trina in the episode "Inn Err Face." Kin used this machine to shrink down and travel inside of Trina to rescure Kon from there.
The mini-sub is a yellow egg shaped submarine with a clear dome window on top. It has a propellor on the back slong with two fins.
- It was confirmed that this submarine is a reference to the Beatles song "Yellow Submarine".
- On top of that, the submarine was created by a boy named Ringo. A name of one of the Beatles.