Claudine

Claudine (クローディーン Kurōdīn) is one of the main antagonists of Pretty Cure Nightmare Fantasy. She is a mysterious bad guy in a group called the Destiny Batallion. She represents either the amber or the tiger's eye, which both represent courage.

Personality
Claudine is a silent killer. Fast, diligent, and very good in her field. Despite her quiet nature, Claudine can feel empathy a lot deeper than other people. She can hide her words, and she can keep a secret, but the only thing she can't hide is her emotions.

Things to do with Amber
I don't have a backstory for Claudine, yet, so I'm gonna talk about two possible options.

Amber is called the stone of courage, but it is actually not a stone of any kind. It's some amorphous, fossilized tree sap. There are bugs that are millions of years old stuck in this stuff, so appropriately, Amber would be able to trap their target in some sort of waxy substance.

Funnily enough, the amber was considered as the "soul of the tiger" in Asian cultures.

Things to do with Tiger's Eye
The tiger's eye is a chatoyant, silk-like gemstone due to its fibrous structure. It is part of the quartz family of gems, so Claudine might have something to do with other blondes in the series like Ami and Itsuko, who are both part of the quartz family.

Claudine would be a protector. When the Destiny Batallion is alone at night, she would be leading the crew to their next destination and she would kill anyone that gets in their way. She might have a daughter and she might be one of the only person in the team that live in the present day.

Trivia

 * Claudine is visually based on the bride from Kill Bill.