Bio:

“Two months after Princess Luna banished Daybreaker to the moon, Fluttershy was an introverted teenage filly when she heard the Flim Flam brothers, the leaders of HYDRA, had declared war towards Equestria. It was a losing battle as the brothers had greater armies and numerous military setups all over the land. One day, Fluttershy became a test subject for the new super soldier serum. The experiment successfully went off without a hitch and she was exactly the size of an abdolescent stallion. Taking a vibranium shield and the name Captain Equestria, Fluttershy and her animal companions set out to put a stop to HYDRA’s reign of terror. Upon raiding more than several enemy bases, taking down countless HYDRA troops and even going as far as destroying a very large tank, the no-longer-timid pegasus had given Equestria the edge to win the war. Enraged about Fluttershy’s interference, Flim and Flam had their engineers and scientists create a terrifying doomsday weapon loaded with hundreds of missiles that could wipe an entire capital city. But Fluttershy, determined to stop them, attacked HYDRA’s main base and boarded the doomsday weapon where she confronted them. Unfortunately for her, the brothers had a trick up their sleeves called the Cosmic Cube which fired a beam of destructive energy that damaged most of the doomsday weapon. With the Cosmic Cube turned against HYDRA’s twin leaders and the doomsday weapon out of control, Fluttershy successfully escaped the giant aircraft but it exploded and sent her flying into the icy water of the arctic circle where her body and her shield were encased in an iceberg drifting across the sea. One thousand years later, the first Avenger was discovered and thawed out by the Apple family who found out she was still alive due to the super soldier serum in her blood. After some minutes of explanation after Fluttershy woke up, Applejack (who would later become Hawkeye) was approached by Luna, whom Fluttershy saluted. Thanking Fluttershy for bringing freedom to Equestria, the night princess also took Applejack and Rarity (who would later be Black Widow) into her ranks. Later, Fluttershy teamed up with Pinkie Thor and Iron Mare (Rainbow Dash) to help another superhero, Spider-Dragon (Spike) tame the alicorn gamma monster, Hulklight (Twilight Sparkle). And thus the Avengers were formed.”

@Background Pony #6FBA
She does eventually. That’s her Captain Equestria’s character arc. From zero to hero.

Does Fluttershy even have the courage to throw that shield?

Yay