Quoted By:
Late game Grass Leader
Puzzle: there would be 3 rooms, each with their own call back puzzle and a trainer with a quiz at the end asking for the region famous for the puzzle(answering correctly gets you a Rare Candy for each correct answer after you beat the gym leader). The first one would be a Grass version of Wallace's puzzle from gen3.
The second one would be Morty's puzzle, but instead of invisible platforms, they would be obscured by tree tops. The trainer would be visible from small openings in the tree tops.
Puzzle 3 would be Blaine's quiz gym(with a grassy aesthetic) but all the quizzes would be required to unlock the way to the next. There would be 3 quiz question areas, If you get the answer right you don't have to fight the trainers(but you still can if you talk to them.) After you get through all of it you talk to the silhouetted trainer at the end, he asks the region of origin for the puzzle, then he turns around to reveal that he's the leader and tallys up your correct answers, giving you the Rare Candy after you defeat him.
Pokémon:
Abomasnow
Gourgeist(Super Size)
Breloom
Roserade
Bellossom
Signature Pokémon: Cacturne with a Focus sash and Swords Dance
Badge: The Treevia Badge