Sagittarius

Sagittarius is the name of Olimars son, and also is a ship part in Pikmin 1. He is usually a green colored captain.

=Pikmin the huge debt=

Sagittarius is a playable character. Most of his creature notes involve something childlike and fun.

How to unlock him
It is easy to unlock him. All you have to do is go to Suma Dock on day 4 and talk to him. He says " Thanks for letting me come along dad! Im excited to find animals with you and Uncle Louie". And there you go he is then playable.

= In the Story Serial =

Sagittarius (actually spelled Saggitarius in the story serial) appeared in the story serial on the main page. He was portrayed as a young man who was kept anonymous for a while. He was revealed to be Olimar's son, instead of Olimar, who the pikmin where hoping would return. He assisted the Pikmin in their fight against The Intelligence.