In almost each Generation, there's a Legendary Pokémon who gets the short end of the stick who doesn't get a movie or major storyline and/or is fairly underwhelming.
This thread discuss the poor dopes who were woefully underused/misused in the Show/Movies and vote for the most screwed over of them.
I'll start by voting for Kyogre & Groudon. They barely appeared in "their" movies, the episodes featuring them were among the series worst
Not far behind is Ho-oh, who's done more as a Pokeball summon in the Super Smash Bros. games than it has EVER done in the TV Show.
Step up ya'll. Time to vent.