As a child, she was abandoned. She struggled to get food and keep warm. One day, a run away Cyndaquil found her and decided to help her out. Now, she has a liking for Fire-type Pokémon, as she searches for a purpose to capture the ultimate Fire-type Pokémon and find her parents.
Typhlosion was Blaze's first Pokémon. It was a run-away Pokémon. As a Cyndaquil, it found her struggling to get food and keep warm, so it decided to help her. They became friends, making a close connection. It evolved and became Blaze's most powerful Pokémon of all, joining on her quest.
Cyndaquil → Quilava → Typhlosion♂
Blaze saw a Ninetales running through Goldenrod City one day. Blaze ran after her, discovering that Ninetales was injured. After helping her, Ninetales wanted to join Blaze on her journey. It is rivals with Blaze's Flareon.
Blaze was training one day when an Eevee walked up to her. At first, Blaze thought Eevee was helpless and couldn't help her on her journey, and the fact that it wasn't a Fire-type made the idea sound more ridiculous. But, after getting attacked by a group of Drowzee, Eevee proved herself to Blaze. Blaze later evolved Eevee into a Flareon by a Fire Stone.