Can you be a jedi in order 66 in star wars battlefront 2?

yes you can be Aayla Secura on felucia (clone wars), you can also be Ki adi mundi on mygeeto(clone wars), Yoda on Kashyyyk (clone wars), Anakin on Mustafar (galactic civil war), obi wan on utapau (clone wars).

You can also go these jedi on other levels, except for anakin.

There is also a heroes vs villains on Mos Eisley(assault mode)