[Kirarakim]

So now that we know Father's voice

Spoiler for manga:

I expect it to be the same as Hohenheim's voice. I know some people don't think this will be the case but I would be surprised if they don't have the same voice. Father is almost an exact copy of Hohenheim, except he ages. So I do expect them to have the same voice. And it makes sense that the narrator might have Hohenheim's voice but not Father's.

Although I do think Father in the flask will have a different voice of course.