Corsen Messer V (SEY 2609 - 2662) was the Imperator of the United Empire of Earth (UEE) from 2643 to 2662. During his reign, he widened the range of crimes eligible for capital punishment, raised taxes throughout the UEE, suspended the right to a trial for political crimes, increased censorship, founded the Monumentalist architectural movement, and opened more political prisons on Charon III.
Born youngest son of Deacon Messer II, his older sister, Livia III, became Imperator in 2628. He ascended to the office in 2643, when his sister retired from public life two years after her husband Daniel Scota and their son Marius were killed in a shuttle crash in Moscow, Earth (Sol III). In 2662, he and his elder son Gammon were assassinated via poisoning. Though the culprit was never uncovered, historical consensus places the blame on his youngest daughter, Illyana VI.