A doppelgänger is double or look-alike of another person. Various characters in the anime are doppelgängers of main characters.
- Main article: Arnold
Arnold is a doppelgänger of Ash, who appeared in the episode Hypno's Naptime. As he disappeared three days before the events of the episode, his mother initially mistook Ash to be her son and embraced him in a hug before realizing her mistake.
- Main article: Jessiebelle
Jessiebelle is a doppelgänger of Jessie, who appeared in the episode Holy Matrimony!. She was James's fiancé; however, when James was exposed to her less than agreeable personality, he ran away from home in order to escape her attentions. She has returned several times with the cooperation of James's parents to try to make him see the error of his ways and marry her.
- Main article: Travis
Travis is another doppelgänger of Ash, who appeared in flashback in the episode Pokémon Double Trouble. As with Arnold, Ash's first encounter with his mother was an unexpected hug due to mistaken identity. However, in this case Travis had simply left on a Pokémon journey and the fact that both travel with a Pikachu had helped the misunderstanding.
- Main article: Team Righteous
Team Righteous are doppelgängers of Jessie and James who appears in a video in We're No Angels. Unlike other doppelgängers, they are fictional characters who had a television show a long time ago. They even had their own Meowth who was just a person in a costume. Unlike Team Rocket, they fight for good instead of evil.
- Main article: Max
Max is a doppelgänger of Max, who appeared in the episode Maxxed Out!. Max has a more central role in his episode than the previous boys, getting in a fight with his same-named lookalike as both felt jealous thinking that the other was already a Trainer. Later on, the two discovered that they have more similarities than their name and appearance and became friends.
According to Harley in New Plot, Odd Lot!, he had a classmate as a child that looked similar to May. She took his lunch from him, and he explains to Team Rocket that she is the reason he hates May so much. It has been debated whether the girl existed or was just made up by Harley to get Team Rocket on his side. There was no mention of her when Harley first met May and she would contradict the original reason of Harley's grudge.
- Main article: Princess Salvia
Princess Salvia is a doppelgänger of Dawn, appearing in Dawn of a Royal Day!. She swapped places with Dawn in a plotline reminiscent of The Prince and the Pauper, taking part in a Pokémon Contest with her Togekiss while Dawn pretended to be a member of the high class. This worked until Dawn discovered that Princess Salvia was expected to watch the last battle of the contest and ended up shouting encouragement to her lookalike. Princess Salvia later gave Togekiss to Dawn so it could continue taking part in contests.