Volcano

David's Quilava, nicknamed Volcano, is the ninth Pokemon obtained by David in the Sinnoh region. He received an egg from Summer, and it eventually hatched into a baby Cyndaquil with a hot temper.

History
Summer gave David an egg, and while traveling to Lake Verity, the egg hatched into Cyndaquil, who David nicknamed Volcano. Volcano gave David a hard time, with a hot temper, blasting David in the face with its Flamethrower attack in fear of his new trainer.

It later evolved during the Pokeathlon Competition at Lily of the Valley Island during the Speed triathlon, winning first place in that race.

Following his journies through Sinnoh, David dropped off Volcano and the rest of his Pokemon at his house, starting with a clean slate for his travels through Unova.