You have to complete 27 challenges in the Challenge Mode.
In order to unlock Plo Koon, you must complete 27 challenges (which are in Challenge Mode)
yes.
A Jedi Master
no- Plo Koon dies in Star Wars Episode III: Revenge of the Sith over the planet of Cato Neimoidia
complete 27 challenges to unlock Plo Koon
Captain Jag
Plo Koon never had a Padawan.
One-Episode III
i think it is the Lego star wars character:Darth maul or plo koon
Plo Koon was trained by the Wookiee Tyvokka until his dearth durin the Stark Hyperspace Confict.
21
If you go to the Star Wars encyclopedia website, Wookieepedia, and go to Plo Koon's page, scroll down to the article about Plo's early life and you will see a photo of what he looks like without his mask. If you have trouble finding it, then go to the related link