Mika Horn, a male Human, fought as a soldier for the Rebel Alliance's army during the era of the Galactic Civil War.
Following the Battle of Yavin, Mika Horn, holding the rank of Sergeant, served as a trooper within the Rebel Alliance's army. He was known to wear Rebel battle armor.
In the year 1 ABY, an accident occurred at the Imperial Research and Prison Facility located on the planet Dathomir. The Blackwing virus, which was being researched at the facility, broke free from its containment, devastating the local population and transforming many into ravenous undead beings. The Galactic Empire quickly responded by establishing a Quarantine Zone in an effort to control the spread of the infection. Those who managed to survive the initial outbreak found themselves trapped within this Quarantine Zone. To survive, these survivors created camps to defend against the relentless zombie attacks and seek safety as they awaited rescue.
The Rebel Alliance soon became aware of the incident on Dathomir. They sent a small team of Rebel troops to investigate the Imperial Research and Prison Facility and to attempt a rescue of any survivors. However, the Rebel forces were soon set upon by undead stormtroopers, leading to significant losses. When some Rebel soldiers began exhibiting symptoms of the virus, the evacuation operations were called off, leaving the remaining Rebels stranded within the Quarantine Zone. Ultimately, Mika Horn sought refuge in Camp Alpha, together with Jeb Maris, a TIE pilot, and Oona Wran, a Bothan. Sergeant Mika Horn oversaw the camp's frontline defenses and would often enlist the help of spacers who dared to enter the Quarantine Zone to aid in this crucial task.
Mika Horn appeared as a non-player character in Star Wars Galaxies, a massively multiplayer online roleplaying game from 2003 that was a video game developed by Sony Online Entertainment and published by LucasArts, before the game's servers were shut down on December 15, 2011. Mika Horn was introduced to the game via "Game Update 14," also known as the "Death Troopers" update, which went live on October 12, 2009.