Brom is first encountered in Chapter 10 of Path of Radiance, where the Greil Mercenaries invade a jail to free Crimean prisoners of war. Brom is in a cell to the far right with the mounted knight, Kieran. Brom has a conversation with Kieran inside the jail cell where the player discovers that he is a simple member of the Crimean militia who doesn't like wars or fighting. It is also revealed that he is distressed over the notion that he may never see his family again, and that he is terrified of torture.
Brom is one of three Knight/Generals in Path of Radiance. In the game each general excels at a different field. Gatrie is a basic general with stats characteristic of Fire Emblem generals, Tauroneo is noted for his high resistance, and Brom is noted for a surprisingly high skill and speed stat despite his class and appearance. Brom is usually overlooked because Gatrie comes at a much eariler level already at level 9 and Tauroneo comes as a pre-promoted level 14 general, while Brom comes at a relatively low level 8, lower than most of the players characters by this point in the game. Despite this Brom has great growth and stats; if trained, he can make a proficient frontline unit.
Brom reveals in several instances that he has a large family with many children. In a level A support conversation with Zihark, he suggests that Zihark should marry his oldest daughter. In the sequel to Path of Radiance, Fire Emblem: Radiant Dawn, Meg, Brom's youngest daughter, is a playable character. She joins after a base conversation, claiming that she is searching for her 'fiance'. It is later revealed that she was talking about Zihark; Brom had urged her on a journey to seek out an old friend for her to wed.
He also has a conversation with Boyd. They talk about Boyd's ability at fighting at a young age. Boyd changes the subject by talking about the prison break and saying that Brom is "STILL a big fatty!" and asks if "all that jiggling" slows him down. Brom feels terrible after hearing his 'big belly' would be a hindrance to the group and gets upset. Boyd then offers Brom to train with him and says "I'll whip you into shape in no time!" This pleases Brom and said his wife will be so surprised.
In Path of Radiance, Brom can only wield lances, but upon promotion, can use swords as well. In the sequel, he uses axes as a starting weapon instead.