This page contains information regarding Star Trek: Picard, and thus may contain spoilers.
In 2385, F8 worked alongside a skeleton crew assigned to tri-hy station A19 on the First Contact Day holiday, April 5. He was a subject of a degree of teasing and derision by some members of the station crew, and demonstrated a lack of understanding of humor.
F8 was among those rogue synthetics assisting in the compromising of Mars' orbital defense system, turning the orbiting weapons against the planet, and shutting down the deflector shields, leaving the fleetyards defenseless against an attack by synth ships. A19's crew attempted to interfere, but all were killed by F8, as were some security personnel arriving soon afterwards. After completing his task and observing the orbital attack underway, F8 committed suicide with a shot to the head. (PIC: "Maps and Legends")