The Never Ending Story 2 has a different cast from what would include Jack Black. Jack Black is typically associated with his own brand of comedic acting in other projects, not this sequel. His acting style and the overall tone of his work don't really match what The Never Ending Story 2 was aiming for in terms of casting.
I'm not sure which 'fifth personality' you're referring to. If you can provide more information, I will try my best to help you find the relevant anime pictures.
I'm not sure specifically which 'Jack Black peaches story' you are referring to. There could be many fictional or personal stories related to a person named Jack Black and peaches. Maybe it's a made - up adventure where Jack Black discovers a magical peach tree, or it could be a story about Jack Black's love for peaches and an experience he had while eating or picking them.