Grummart was an individual who held the rank of captain in the First Order military, and was responsible for teaching the regime's stormtroopers. During the Battle of Exegol in 35 ABY, First Order defector Finn asked fellow former trooper Jannah whether Captain Grummart had taught her archery after witnessing Jannah's use of an energy bow against the Final Order forces. Jannah instead replied she had been taught by Phasma, the head of First Order stormtrooper training.
Grummart was mentioned in the 2020 book Star Wars: The Rise of Skywalker: A Junior Novel, written by Michael Kogge.
Grummart was mentioned in the 2020 book Star Wars: The Rise of Skywalker: A Junior Novel, written by Michael Kogge.