In the Miraheze Wiki, Boombox as “a chill phighter, who has a little care for Phights”. Boombox also appears to “both like being a party animal while also taking some time to relax”. Boombox enjoys making new friends, and “enjoys being with others than being by himself, he is very positive towards his friends, however he can end up trying a little too hard to make friends; It is difficult to make him angry.”   -   info & quotations from: https://phighting.wiki/Boombox/Lore