Pokémon's professors Oak and Kukui have a unique connection - they both met Ash as children thanks to the Mythical Pokémon Celebi, known for time-travel abilities. In the Pokémon 4Ever film, a boy named Sammy, actually Professor Oak, is taken to the future by Celebi. In a Sun & Moon episode, Ash meets a young Kukui in the past. Both encounters shaped the professors and Ash. Interestingly, Ash indirectly influenced Kukui's creation of the Alola Pokémon League. The mysterious connections in the Pokémon world continue to fascinate fans.