Luca (ルーカRūka in Japanese) is a young Pokémon Ranger and one of reccuring characters in Pokémon Stories: Tandor Arc. He acts as Astoria's protector and a travelling companion on her journey.
Luca is a tall, skinny young man with very black hair and cold blue eyes.
His usual outfit consists of a pale yellow shirt, sleeveless black jacket with high neck, oversized jeans, big boots and fingerless gloves made from black leather. He also has a belt with some pockets to carry helpful items, such as Poké Balls with his Pokémon.
As a Pokémon Ranger, he wears an ordinary orange and black suit, and also has an Escape Rope with him.
He is friendly, and sometimes reckless when it comes to protecting his friends. He's always ready to risk his life when somebody who he deeply cares about is is trouble.
This Tonemy was just a Pokémon that Luca's father found injured in the cave, and he gave her to his son because Luca was a skilled doctor. He cured Tonemy, and she preferred to stay with him instead of returning to the cave. Despite Luca never officially caught Tonemy, she became a great partner and always helped Luca to rescue people. Tonemy's known moves are Smog, Tackle, Haze, Poison Fang and Gunk Shot, and her ability is Levitate.