Millie

"I know it's yours Spark. I'm just borrowing it!"

- Millie’s first lines as a Pikachu

Millie is a female character in Hilda (2024 Reboot). She is a minor character in Season 1 and a supporting character in Season 2 and onwards.

Personality
As a Pichu, she is very curious and energetic and is known to cause accidents at times.

As a Pikachu, she's still curious and energetic but will reveal to also be very rambunctious in Season 3. She also likes getting chased in a comedic-like fashion way.

As a Raichu, she will still have the same personality, but will also be a kind soul who loves to help others.

As a Pichu
In Season 1 Episode 1, She is shown playing with Storm, her shiny brother, and they then see Hilda and her pet deer-fox Twig. She is later seen calming her exhausted and angry mother down and tries to take off the bell that was tied to her tail.

In Season 1 Episode 5, She is seen rushing to her mother, worried, and informing her that Storm is missing. She is later seen in the Forest, happy to see Storm again.

In Season 2 Episode 6, She, along with her siblings, are seen playing just outside the walls of Trolberg. The Keeper of the Bell tries to chase them away since he knows the bell will soon ring, but his attempts fail. When the bell starts, the siblings flee in fear, but at the end of the episode, after Hilda and friends have sabotaged the mechanical bellringers, they return to their favorite spot.

In Season 2 Episode 10, She and her family are briefly seen in a cave outside Trolberg. They notice Gryla, who is on her way to Trolberg, and keep a low profile in order not to attract her attention.

In Season 2 Episode 13, She, along with her family, play a major role. She tries playing hide and seek with her siblings, but spots the two humans. She is later seen playing with a shiny Azurill around a campfire, mistaking his tail for a Berry. She is then taken to her father to safety, along with her siblings, during the invasion of the Dark Clan.

She is then seen with her family, who they surprisingly save Hilda and Johanna by taking them to their shelter, her mother offers them a drink and blankets. Hilda and her even play together, like making stone figures of themselves. The following morning, her father draws a map for Johanna and Hilda, and even uses magic to make a small, woff-shaped guide to help them reach the exit.

Later at night, Bluedrop realizes how much Millie wants to know what it's like to be a human, along with overhearing Hilda wishing to be a Pokémon, and uses nesting doll version of a shiny Oshawott and a nesting doll version of a human version of Millie and puts each stone figure in each nesting doll.

Millie then wakes up as a human (with this being her first speaking role) and is confused then later surprised that she's been turned into a human, not knowing that Bluedrop had made it happen.

In the movie, Millie has a bit of a large speaking role.

Despite learning how to be a human, Millie still very much acted like her old pichu self, making it hard for Johanna to keep her under control. Johanna did her best to keep her calm with the new child, but lost her patience when Millie broke the snow globe from "S2 EP10". This in turn made Millie upset, and Johanna regretted shouting at her.

Along with Johanna, Alfur, Tontu, Twig, and eventually joined by Erik Ahlberg, Millie tried to find Hilda and her family. When they found her, Erik thought the female raichu posed a threat to Millie and tried to keep mother and daughter separated, forcing Johanna to step in and disarm him. When both Millie and Hilda were reunited with their real mothers, the spell was broken and both are restored to normal, but remaining on friendly terms.

After Rayquaza's announcement, she, alongside with other Pokémon, get to use the ability to turn into humans as well as Hilda having the ability to turn into a Pokémon and help Team Rescuers.

As a Pikachu
Near the end of the film, Millie, along with her siblings, eventually evolved into Pikachus and she goes to Hilda's house to read a book.