ヨハン・マルシェル Yohan Marusheru
|Dream:||To find the mermaid who saved him|
|Skin color:||Dark blue|
|Japanese seiyū:||Daisuke Namikawa|
Johann claimed to see a mermaid as she saves him from drowning. However, nobody believes him except for Nobita. It is revealed that the mermaid he saw was actually Nobita turned into a merman.