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Jeffrey (Japanese: イサナ Isana) is a minor character of the day from Gymbaliar!. He is from Mocha Town.
He challenged Jessie at Team Rocket's fake Gym. His Marowak easily defeated Jessie's Dustox. After his victory, he was given a Badge. He then ran off, bragging about his fake Badge, believing it was real.
Jeffrey later appeared in An Old Family Blend! registering for the Lily of the Valley Conference with his Luxray. However, he was not shown during the match up process, indicating that he did not make it through.
This listing is of Jeffrey's known Pokémon:
| A Luxray was seen with Jeffrey, when he was registering for the Pokémon League Tournament. It has not appeared since.
|| An Old Family Blend!
- A Trainer with a strong resemblance to Jefferey was shown participating in the Vertress Conference. It is unknown if it is actually him.