List of Characters appearing in The Adventures of Mikey is Pikachufreak's fan-fiction thing to make. These are the list of Main and Minor characters appearing in the 1999 TV Show: The Adventures of Mikey.
- Mikey is the main protagonist of the series and the youngest of the Eevee Brothers. He is one smart kid who can enter the world tournament. He is voiced by Kayzie Rogers.
- Rainer is the first of Mikey's brothers and a water expert. He is average and has a total crush on Brandy (the first of Zachary's older sisters). He is voiced by Maddie Blaustein.
- Sparky is the world's famous electric expert and the second of Mikey's brothers. He is one lucky person who has a total crush on Yumi (the second of Zachary's older sisters). He is voiced by Matthew Mitler.
- Pyro is the most fiery expert of all and the last of Mikey's brothers. He is described to be a life-long person and the most amorous guy who has a total crush on Saffron (the last of Zachary's older sisters. He is voiced by Matthew Mitler.
- Kimiko Tohomiko is Mikey's married girlfriend and the only Xiaolin Monk available. She is the dragon of Fire who is sisters with Kari, Serena and Molly's classmate. She and Mikey have Hannah, a Girlstuff, Boystuff character as their daughter. She is voiced by Grey DeLisle.
- Timmy is a friend of Mikey and the best kindergarter of all. He is one young kid who wants to be here and has a daughter named Marli. He is voiced by Kayzie Rogers.
- Buena Girl is the girlfriend of Timmy and the only member of The Mascaritas. She is one real wrestler who once wants to win, but can be quite unusual. She is voiced by Kimberly Brooks.
- Morrison is Mikey's main rival and a trainer from Hoenn. He's a full time player who he and Shane want to be popular. He is voiced by Sean Schemmel.
- Katie is Morrison's love interest and the married girlfriend. She is one rough girl who she and Morrison are using Vivi Winstrate as their daughter. She is voiced by Andi Whaley.
The Hitmonchan Trainer
- The Hitmonchan Trainer is one of these three main antagonists and one specifically rough person. He likes to threaten Mikey and call him Little Runt. He is voiced by Matthew Mitler.
The Spearow Trainer
- The Spearow Trainer is one of these three main antagonists who is one mean person. He's the personal guy who wants to hurt Mikey. He is voiced by Ted Lewis.
The Beedrill Trainer
- The Beedrill Trainer is one of these three main antagonists and one bad guy. He is the most famous guy who wants to do anything. He is voiced by Maddie Blaustein.
- Luka is the mother of Mikey and His Brothers and a caring lady. She lives in Red Rock Isle and learns about the secrets. She is voiced by Lisa Ortiz.
- Jack Pollockson is the husband of Luka and The Eevee Brothers' father. He lives in Whitestone and loves to do art. He is voiced by Jimmy Zoppi.
- Diana Lombard is Rainer's love interest who is the only Martin Mystery character available. She and her cousin Sam Simpson look identical and know best. She is voiced by Kelly Sheridan.
- Annie Proctor is Sparky's love interest and another girl from Hoenn. She has parted ways with Professor Proctor in order to be with Sparky. She is voiced by Suzanne Goldish.
- Audrey Jones is Pyro's love interest and one of these girls from Klasky Csupo's Rumor Has It. She and her two sisters Dorrie and Geneveive live in their house with their only mother Mary Jones. She is voiced by Grey DeLisle.
- Casey is Mikey's only total crush and a baseball expert. She is the famous girl who is in love with Zachary Evans. She is voiced by Kerry Williams.
- Rebecca Hawkins is Timmy's only total crush who knows to be personal. She and Syrus Truesdale wear glasses and live together as a couple. She is voiced by Kerry Williams.