Sapphie (Human)

Sapphie is the Champion and main hero (Besides her friends) of Jewelpets. She seems to be very smart.

In Jewelpets
She goes on an Adventure in Jewel Land. She gets all 8 badges and wins the league. She has even taken down the Eternal Darkness before it spread to different regions.

In Pokemon
She is forced to go to Johto by the Magic Academy, even though she lost the Pokémon League (to Garnet). She then goes to Kanto, to see the Magic Academy over there. Over the course of her adventure, she is interrupted by Garnet, Sango, and Ruby. She has also met Finn.

In Adventure Time
Sapphie is never seen, but is mentioned by Finn a lot. In Jewelpets, the opposite is true.