If Ash were to age there would be another theory that would be debunked; the bike crash fan theory. In the first episode, Ash crashes Misty's bike and there are fans who believe that this crash actually put Ash into a coma, meaning that every event that follows after is actually a fan...
Ash, Pikachu and Misty Warner Bros. Pictures Based on a Japanese toy called "Poketto Monstaa," Pokemon were tiny "pocket monsters" that battled each other when ordered by their "trainer." In 1996, Nintendo adapted the Japanese characters to promote its portable video game system, Game Boy....