Micha was a Rebel Alliance pilot of the female persuasion, active during the Imperial Era. She was known as Red Four, her callsign within Red Squadron.
Approximately 1 BBY, during a battle with the Galactic Empire, Micha made the decision to crash her X-wing starfighter directly into Darth Vader. Vader was a Sith Lord and an agent of Emperor Palpatine. This act was a suicide mission meant to kill him. Despite the other rebels believing that Vader had died in the explosion, the Sith Lord lived. He used the Force to clear the debris and then continued his assault on the Rebel forces.
The character of Micha initially appeared in "Red Four," a single-page comic authored by Charles Soule. It was featured in Marvel Comics 1000, a Marvel Comics publication released on August 28, 2019 to commemorate Marvel's 80th year.