Ahem I have done some research to answer that question and here they are:
Nothing but a Missing Number: I’m in that one and it hasn’t started yet. You get to play as a legendary fighting against the nefarious MissingNo. It was to destroy the world because of what humans said about him being useless, weakling. There are a lot of roles left.
Pokémon Heroes Chapter Two: Villains: Continuation of Pokémon Heroes RPG. The people have powers relating to pokemon powers. The good guys are trying to defeat the bad guys call Dark Twilight. It looks interesting to me but I don’t really know much about it...
Pokemon Battle Island Revolution: The story is pretty much you are a trainer/coordinator (I think they’re allowed) that been invited to this island, which has a large variety of pokemon. It doesn’t tell you what going to happen has a bit of mysterious feel to it. It has started but I believe they’re still accepting.