OH! I thought Val was from Zelgadis's universe! Luckily Gaav gets the excuse of "remembering" multiple versions of things to account for differences.
... you might need to watch that! :P Rezo is all over it and Zelgadis has this great but heartbreaking scene in which he's so upset about Rezo he actually tears open his tongue and Naga has anonymous but obvious cameo which makes it that much cooler!
Poor Xellos and poor Zelgadis, it seems like they have the same problem of refusing to allow for and validate the other and that their histories don't match. I say we lock them in a room together and tell them to play nicely. :P Or if we can't get them to share toys, at least acknowledge that they aren't the people they think the other is?