See post #5018432.
Ulrich von Hutten is a personification of one of the H-39 proposals, much like Friederich der Große, though she seems to have more of a "younger sister" look. Her appearance otherwise consists of black hair with yellow eyes with a pair of red horns. Her legs are clad in black thighhighs while she appears to be wearing a black jacket. Her rigging, much like other experimental Ironblood capital ships, is massive and has a deeply animalistic aesthetic. She also exhibits a cynical personality compared to the more nurturing Friedrich.
In real-life, the H-39 (personified by UVH and FDG) was designed by Germany in the late 1930s based on intel reports of the Sovetsky Soyuz-class battleships being built by the Soviets. The ships themselves were never named, Ulrich von Hutten was only named in unofficial talks between Hitler and the German Naval High Command as a suggestion as having a medieval persona as a namesake (and therefore unrelated with the regime) would lessen the morale shock if any of the H-39s were lost in combat.
The following tags implicate this tag: ulrich_von_hutten_(ignition_matrician)_(azur_lane) and ulrich_von_hutten_(mayhem_maid)_(azur_lane) (learn more).