The sort of deal where characters will guest-star in other games, notably fighting games, before their own début flagship title. It came to mind when of course we saw that Ninja Theory Dante is all-but-confirmed to star in Playstation All-Stars, which is set to release before DmC, but that also then reminded me of Starkiller who first appeared in Soul Calibur IV before The Force Unleashed.
Are there any other such examples? Because at this point, since Dante isn't officially confirmed, I don't think it's appropriate to create this page just for Starkiller. And even still, what would you call it? And oh, but of course most important of all, would this even fit as a concept page anyway or is it something left for the game, character, or guest character page instead?