...That is not an explanation. Suspicion increased! The Spirit narrows his eyes at the definitely-a-doppelganger. There are only two possibilities. Either this is a different Jonouchi (from... somewhere), one who appears to be on actively friendly terms with the Spirit of the Millennium Ring, or this is something else that's started slipping in its Jonouchi-impression.

"Who or wha' are 'ou?"

One of those possibilities seems likelier to him than the other.