Well depends. We may have to wait until Letter's chara is introduced before introducing Henry, cause I was thinking that world would be somewhat on the outside of the WDS for now, since the equipment there, according to letter's bio, was damaged, so the WDS wouldn't be active there thus not detecting Henry as a Keyblader. 

So I am just a bit confused on how to go about that. 

Anyway, waiting on King Kindred's response to Donald and I shall post for Gabe now.