Я думаю Сидиус, потму что он управлял и Республикой, и Федерацией, и Империей

К слову, про силовых духов:
A Force spirit is a nonphysical manifestation of a onceliving, strongly Force-attuned being. Even powerful Force-users become one with the Force upon their deaths, but some Jedi Masters (and a few other powerful Force-users) learn disciplines thet allow them to maintain their own identities separate from the Force. These individuals can visit the physical world as a kind of ghosts, offering advice and information to those who can perceive them.
Retaining a separate identity denies the will of the Force, though this is sometimes necessary for the good of the galaxy. A Force spirit's time is therefore limited; it cannot exist indefinitely. A Force spirit can only manifest a limited number of times before it must join the Force. (Dark side spirits are not troubled by this limitation, since they actually thrive on individuality and self-indulgence.)
Jedi Masters generally do not choose tj become Force spirits unless they have important business they have left unfinished? such as passing on critical information or, in some rare cases, completing the training of their apprentices.