Nidoran (Greta Parker)

Nidoran is the first Pokémon Greta Parker obtained in Pocket Monsters. Before Nidoran was given to her, she used to live in Professor Oak's laboratory.

Kanto Journey - The Beginning
Nidoran was given to Greta by Professor Oak when the summer camp officially began in. Although Greta was nervous while she met Nidoran for the first time, Greta tried hard to hide her tension for meeting a Pokémon, and instead she appeared to be quite calm and friendly. Despite of that, Nidoran still acted shy and strange around her.

In while Greta and Nidoran were tasked to solve a riddle and find a particular item, Nidoran worked in a sync with her partner. Despite she was attacked by a Diglett in the playground, Nidoran had her first Pokémon Battle with Greta and worked as a team to defeat the Diglett to get their item. That incident improved the relationship between her and Nidoran, and helped each other trust even more.