Nintendo has announced that DLC based on classic Zelda adventure Majora's Mask will be released for Hyrule Warriors next month. The pachage includes a new challenge map, three new costumes (Skull Kid is rumored to be one of them) and two new playable characters.
It's one of the latter two that probably is most interesting, because it's... Tingle. So now you'll be able to slay hordes of Bokoblins as the probably weirdest character in the Zelda universe. The other playable character is Young Link. Also nice of course, but not even remotely as cool as Tingle.