Bols was the oldest member of the Jaegers. Before joining them, he was a member of the Incineration Squad. He wore a mask that obscured his face, and not much is known about him other than the fact that he was married and had a child. Despite his appearance, he seemed to be shy around other people, staring at Wave for several minutes before finally introducing himself. He was a skilled cook and often made meals for the team.

Also Jaegers purpose is to kill anyone thats in the way of the Capital and there fore they will try to hunt down Night Raid. There kind of the Police force in the capital.

Description from: http://akamegakill.wikia.com/wiki/Bols
Image from: http://www.crunchyroll.com/anime-news/2014/07/25/akame-ga-kill-anime-casts-jaegers-secret-police-force
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