Red Cheerleader Cookie

Red Cheerleader Cookie (Vivian Batwing) is an NPC Cookie that appears in Cheerleader Cookie's Island of Memories. She is a cheerleader for an opposing team, and acts as the boss of the Memories.

Though she is at first very harsh towards Cheerleader Cookie, after she is defeated in a cheer-off, she learns to respect her, and the two of them become friends.

Strategy
Red Cheerleader Cookie's boss fight is a rhythm game, without the rhythm. Try to pay attention more to the button and colors than the sounds, because the music and sound itself is more likely to throw players off than it is to actually help them succeed.

The final version of her boss fight is noted to be perhaps the hardest of all the bosses in Island of Memories, and may take several tries to nail down exactly how to do it. Keep in mind that all patterns repeat eventually, and try to memorize the longer ones to some degree, as they are the most dangerous to Cheerleader Cookie's health with the large number of misses that can be caused.

Trivia

 * Curiously, Red Cheerleader Cookie has many unused sprites, seemingly as though she was originally intended to be playable in some form, though there is no other evidence of this.
 * Red Cheerleader Cookie's boss fight may have been styled off of Taiko no Tatsujin, a popular series of rhythm games.
 * Just like said on the top, her real name is Vivian Batwing although she doesn't look like a bat or having a bat symbol in it.

In "My Little Pony, Pokémon Sun and Moon"
Before a cheerleader, she was the evil twin sister of Darla Batwing. She decided to cause trouble to the ponies and the characters in Alola which makes her the villain of the cartoon. Later, because of all the trouble she makes there, she decided to flee from her family and Alola so she sneaked on board a plane.

The plane crashed into the sea. Luckily, she knew how to swim so she swam over to the nearest island which is the Cookie World. She doesn't want to cause trouble there again so she wants to be a cheerleader to support people.

When Cheerleader Cookie arrived, she was jealous of her so she tagged her on a rhythm battle. When defeated, she remembered what happened previously so she apologised and complimented Cheerleader Cookie. Therefore, they immediately became friends and she was no longer a villain anymore.