Unpopular opinion time.
I think that if a character has "strong relations with Nintendo" in terms of their series being almost exclusively on Nintendo platforms, I think that actually hurts them rather than helps them at this point.
Think about it. If the idea is to spread a customer base with DLC, and those games began on Nintendo consoles (as in, didn't already have a reputation for people to flock to the system for them), most of their fans from the start likely already had Nintendo consoles, because by extension they're Nintendo fans.
Compare that to a series with iconic characters that have been on several gaming consoles, and there's nearly no comparison in terms of iconic status, recognizability, and star power. (No offense to any fans of series like that, but it's simply a belief I have on DLC this time around).