Fehu

Diane Laurent, more commonly known as Fehu, was a member of Rune. When the organization was disbanded, she stayed with Team Prism in order to continue training Grunt 2.

Personality
Somewhat serious, but she has a distinct curiosity inside her. She's fairly wily and cunning, and seems to harbor some secrets. Strangely, she seems to dislike Pokémon in general, but apparently tolerates Grunt 2 in order to train him.

Before Rune
Diane was born in Purika City, but moved houses several times before she left on a journey. However, unlike most travelers, she did not have a Pokémon. She has yet to explain why.

At some point, she somehow gained knowledge over cloning technology...

In Rune
Diane was the first to join Rho, and took on the codename Fehu. She assisted in the creation of Neffytwo, a clone meant to replace Team Prism's Admin Neffy. However, due to Neffytwo's mostly human DNA, he rapidly declined and was close to death. His life was saved by NMSM, who saved Neffytwo by fusing him with Mew DNA, changing him into a Mewtwo.

Fehu quickly acknowledged her mistakes in creating Neffytwo, and agreed to train him in his new form.

After Rune
Fehu has stayed behind in order to train Neffytwo, now named Florian.

Relationships
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Pokémon
Fehu does not have any Pokémon of her own, but she has been training Grunt 2.

Florian (Male Mewtwo)
Florian is Grunt 2 of Team Prism. Fehu supposedly was the one who gave Rune the technology to create him.

Trivia

 * Fehu has the last name of one of the scientists responsible for the creation of the first Mewtwo. (This was not an intentional reference by the authors.)