Miitopia HD: The Fandub Part 1
Aiden Littlewood-Johnson for The Guardian Spirit
The Guardian Spirit (and yes, I know this character doesn't have a name. But that's what they call themselves the first time they introduce themselves, so that's the name I'm giving them.) comes from the family heirloom that Worried Mother gives the protagonist. They make their appearance right before the first fight and end up giving the protagonist their class(es). Honestly, I don't really know what I want for this voice since we never SEE them. However, to give you an idea, a good reference is Arceus from Pokemon. Both are godly figures, and a deeper, slightly grander voice is what I'D do.
(Relieved, after asking the protagonist if they can hear them) "Ho ho! It does seem like you're hearing me...what good fortune this is!"
(Hesitant, trying to explain who they are) "Now, you may not believe this, but I'm kind of a...guardian spirit."
(Stuttering, obviously trying to improvise some wise words before giving the protagonist their powers) "I..err...bestoweth upon thee the awesome power of the guardian! Huuuuurgh...HAAAAA!"