Fiona Messer

Fiona Messer was the younger child of Ulysses Messer and sister of the last Messer monarch, Linton Messer. Her exact rank in the hierarchy of the UEE at this time is unknown. Based on the existing titulation of the Imperator, her title must be equivalent to a princess, although the only source about her life only notes "that she's grown weary of their (her and her brother's) birthright", indicating the sisters (and brothers) of the current Imperator inheriting some sort of power or titulation.

Life
She and her brother organized a coup against their father Ulysses on 12 August 2781. Fiona "founded a resistance movement and made contact to anti-goverment activists". A turn, which later led to her brothers downfall. After forcing their father to suicide, Linton was empowered. Her role in the Empire after the plot is unknown.