Although coming from a poor background Karl strived to leave Flea Bottom, eventually making a name for himself as a highly-capable enforcer, assassin, and cutthroat. Karl was eventually sent to the Wall and became a ranger of the Night's Watch.Karl survived the White Walkers' attack on the Fist of the First Men, and regrouped with the remaining survivors as they attempted to regroup at the wall. He eventually decided to reside at Crastor's keep along with his dear friends Tom and Rast. Where he resides to this day, drunkenly singing and having illegitimate children with Crastor's former wives.
In yonder land where once we lay
I strived to fight another day
But from the smoke, did he come
Alas the beating of the drum
...