He was spotted ingame every now and then when the devs decided to break it out.I remember a couple years ago the devs helped a guy propose to his girlfriend and set up this whole event where Rularuu appeared in Atlas Park and War Witch came on saying we had to defeat him with the power of love. The guy proposed ingame and in real life and the battle was won. Absolutely one of my favorite memories of the game.I managed to snag a few screenshots of it when it happened.