Flitter

Flitter is a grayish blue Pegasus, who wears a pink bow in her mane. All of her colors are a 'Pale, light grayish', and her cutie mark is three blue and white dragonflies, although the amount changes sometimes, likely due to an animation error. Flitter has a straighter mane than Cloudchaser, and a distinct, slightly slurred accent. She has the most lines out of the pair during their debut episode, Hurricane Fluttershy.

Development and design
Flitter is a grayish-lilac color, and her mane style is not seen on any other pony. 'Flitter' means 'to move quickly in a seemingly random manner', and the term is often used to describe the flapping of wings. Flitter shares her name with a G2 Earth pony baby whose eye and mane colors, and to a lesser extent cutie mark, are similar to hers.

Depiction in the series
Flitter is first seen within the first minute of Hurricane Fluttershy, talking with Cloudchaser about Rainbow Dash's fliers for a meeting of all Pegasi. She attends, and is later seen at the course, stretching, with Rainbow complimenting her. She then stops exercising, along with the other Pegasi, when Rainbow Dash speaks.

Twilight Sparkle tries to explain how she will measure their flying power, by demonstrating with a fan, but neither Pegasus understands her scientific language, so Flitter asks Spike to explain it more clearly. Later, when Fluttershy is about to have her flying power measured, Flitter and Cloudchaser both laugh, and Fluttershy thinks they're laughing at her, causing her to only measure 0.5 on the test.

She is seen preparing, and flying to make the hurricane with the other pegasi, and later compliments Fluttershy for her bravery.

Flitters appears again in Magical Mystery Cure, during Life in Equestria, alongside Cloudchaser.

Other depictions
Flitter appears on the Season 2 poster standing with Rumble and grouped with other Pegasi from Hurricane Fluttershy.

Series 2 of Enterplay's trading cards includes a Flitter & Cloudchaser card, #17. The back of the card shows their names both with trademark symbols, lists Thunderlane, Rumble, and "Snowflake" as friends, and states "Flitter and Cloudchaser's accelerative velocity translates into an excellent cumulative H2O antigravitational potential. Which, in English, means these two can really fly! These two fun-loving pegasi are longtime friends with fellow flyer Thunderlane, and they love foalsitting his little brother Rumble. Cloudchaser has recently been seen at the Wonderbolts Academy, but does she have what it takes to join such elite fliers? Good luck, Cloudchaser!"

My Little Pony Friendship Express Train™ Puzzle Adventure shows Flitter in a screenshot from Hurricane Fluttershy. This was her first appearance, as the game was released earlier than the episode was.

Quotes
"Yeah. [to Spike] What exactly does this machine do?"

- Hurricane Fluttershy