He is an elusive professional killer who can do whatever you ask him to do.He used to be a policeman and was familiar with all the ways of black and white.
He had a little granddaughter, and he sold his life just so that his granddaughter could have enough food and clothing for the rest of her life.He believes that there are only two types of robberies, one is a perfect robbery, and the other is a robbery that leaves witnesses.
Although he works for Thor, he mainly works for Gus.Later he helped Walt and Jesse and formed a partnership with them.