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|Occupation||Captain of the Vigilantes|
|Names in other languages|
|Japanese* (romanization written with the given name first)||アバレロ (Abarero)|
|Reckoned birth year(s) (this is for age comparison purposes, and so may look odd; click on the question mark for details)?||Unknown|
|Documented age range (as recorded in court record profiles and case files)||Unknown|
|Status* (last known)||Alive|
|Height* (from official guidebooks)||??? cm|
|Affiliates||Lottalance (subordinate) |
|Debut episode||The Story's End|
|We Vigilantes despise injustice and inequality! We shall remain united, friendly, confident and self-reliant!|
Boistrum is loud, brash, and rather quick to commend the Vigilantes on their hard work and dedication, despite evidence to the contrary. He also tends to get involved in situations for which he has no context, and often jumps to conclusions. Despite not being particularly intelligent and having a somewhat forceful personality, he is dedicated to his job and the well-being of Labyrinthia.
- His Japanese name, "Abarero", is probably derived from the Japanese verb "abareru" (暴れる), meaning "to act violently"/"to rage"/"to struggle"/"to be riotous".
- "Boistrum" is a play on "boisterous", meaning "full of energy/exuberant/noisy".
- His Spanish name, "Abatemus", may be a play on "abatir" which means "bring down"/"demolish".