WMG / Kyou Kara Ore wa!!

Mitsuhashi becomes Jadeite
And, after the end of the Dark Kingdom, reappears from nowhere to kick Sailor Moon, Mercury and Mars asses (because Mitsuhashi always wins, in the end) before returning to Chiba.
http://tvtropes.org/pmwiki/pmwiki.php/WMG/KyouKaraOreWa