Do not piss off Giratina, for it will stalk you...and then drag you into its twisted screwed up world and try to kill you.
In the manga version, it is implied that Zero dies when the Mecha Giratina is frozen in the glacier; becomes kind of a Tear Jerker when you realized Newton has disappeared after Ash returns from the reverse world...
The pictures of the town getting crushed by the glacier.
The Scrappy: Shaymin acts like a bratty, self-entitled jerkass, particularly to Ash and never gets called out on it. Even worse, when Ash understandably objects to this treatment, the others turn on him and act like he's the asshole. And worst of all, Shaymin doesn't really do much to earn his mention in the movie's title, spending most of the film acting incredibly smug, demanding complete strangers to be his taxi service, begging people for food, and generally being an Ungrateful Bastard. Ironic for a character described as the "Gratitude Pokemon". The only thing of importance he does is save the life of the real star, Giratina, so that he can go finish off the villain.
Tastes Like Diabetes: Ash forgot to wash his hands and then Dawn and Brock began to act like Ash's parents.