Cassandra

Cassandra is the student council president of Nyejo Academy at the time that the player enrolled in the school. She eventually becomes one of your two main rivals.

Appearance
Cassandra has long black hair that fall below her waist. She wears a light blue vest over a white buttoned-shirt, a short blue skirt, black stockings, and brown shoes. She also wears a red ribbon around her collar and a red belt with a silver buckle around her skirt.

Personality
She is shown to be rather playful, like a child at heart. This causes her to enjoy teasing people and playing around. Nevertheless, she is very friendly and open towards other people, allowing her to connect with people and open people up back at her. This enables her to expand her social circle with everyone, but adults and teenagers that are around her age.

However, despite her somewhat childish behavior, she is shown to be very calculative and cunning. Just inside her school alone, she has been able to create a group that enables students to sneak outside the school to catch and train Pokemon, create connections with the faculty and student council (allowing her to earn favors like getting someone's confiscated Pokemon back to their original trainer), and hold position of student council president that's well-respected and loved by everyone.

She also holds an ambitious dream to take over the Pokemon League, with herself as the champion. She also plans to have her close associates, whom she sees potential in, to become the new Elite Four and maybe even the new Gym Leaders. It is unknown what is motivating her to take over the Pokemon League and for what reason.

History
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First Encounter
During your first battle against Cassandra, she will only have one Pokemon in her team. Now, you would think this fight will be a breeze, right? I'm afraid this fight will prove to be an absolute nightmare to win.

Cassandra's sole Pokemon is a Clefairy. This Pokemon is terrifying to fight against for a good reason. Clefairy will be overleveled, compared your Pokemon in a normal playthrough. This makes Clefairy to not only strong, but also a tank with high defense and large amount of health.

In addition, Clefairy has the ability called Magic Guard, which makes it so that Clefairy can only receive damage from normal attacks. This means that Pokemon is immune to receiving damage from situational damages like status ailments (like poison and burn), weather (like hail and sandstorm), field effects caused by Pokemon moves (like Curse, Leech Seed, and Spike), and even recoil damage from its own moves (like Take Down and Struggle).

And as the biggest problem of them all, Clefairy has access to Wish, which allows it to receive a large amount of health after two turns since using it. Added with the fact that Clefairy has high defense and large amount of health, this means Clefairy can easily undo all the damage to can deal to it with your underleveled Pokemon. This isn't helped that Clefairy is also equipped with an Oran Berry to recover some health once its own health falls into half.

There are only two methods you can proceed to have a chance to defeat Cassandra's Clefairy.

First off, you can grind your Pokemon to level them up as high as possible. It's difficult to do so, since most of the Pokemon in the previous area don't give you that much experience points. However, you can speed it up by participating in the daily school tournament and having repeated battles against the nurse-in-training who hangs out at the shack at Autumn Woods.

The second method is to delay the fight against Clefairy. While Clefairy may have access to Wish, its use is limited to only ten times. So, you can have an endurance fight against it until Clefairy uses up all its PP for Wish, as well as use up its Oran Berry.

This would require having a team filled with the maximum of six Pokemon, having your Pokemon have high defense and health, and geared up with lots of health recovery items like Potions and Oran Berries.