Misty

Misty is a 10-year-old girl and a former traveling companion of Ash. She is the youngest of four girls in her family. She is the daughter of unnamed and unmentioned parents. She is the gym leader of Cerulean City. She loves Water-Type Pokemon.

History
Misty first met Ash when his Pikachu destroyed her bike with his thunderbolt and Misty was enraged, she followed Ash around wanting him to pay for destroying her bike. She soon stopped being angry at Ash and was inspired by him, she possibly had a crush on him. She was jealous of other girls being around Ash. She was often a target to Team Rocket who used her in their plans to capture Ash's Pikachu, but she was always saved by Ash and Brock and their Pokemon. She traveled with Ash, Pikachu, and Brock until Ash decided to travel to the Hoenn region and she decided she had to go back to her gym. She made a few more appearances in the Pokemon anime. There is a rumor that she may reappear at the end of Pokemon XY, but this hasn't been announced yet and possibly isn't true. She was the most popular traveling companion to ever travel with Ash.

Psyduck♂
Psyduck jumped into Misty's Poke Ball by accident and wanted to travel with her. Although she treated him badly at first, he was there to rescue his trainer from danger especially from Team Rocket.

Horsea♂
Horsea is a Water-type Pokemon caught by Misty. He was confirmed male in the English dub.

Goldeen♀
Goldeen is a well known Water-type owned by Misty.

Corsola♀
Corsola was caught by Misty after she rescued her from Team Rocket.

Egg-Azruill♀
Azurill was given to Misty by Tracey after she released her Togetic.

Egg-Togepi-Togetic♀
Togetic as a Togepi was raised and hatched by Misty. She is one of Misty's most popular Pokemon.