Michael "Mike" Ehrmantraut is an American career criminal, Marine Corps veteran, and former Philadelphia police officer. Calm and calculating, Mike later became a parking garage attendant, private investigator, hitman, assassin, and violent fixer for drug traffickers to financially support his family his daughter-in-law Stacey and granddaughter Kaylee.
He worked for both Gustavo Fring and Saul Goodman as a private investigator, head of security, cleaner, fixer, and hitman. Mike had extensive knowledge of how to operate on both sides of the law undetected.
As a former beat cop and true professional, Mike maintained an extensive, up-to-date knowledge of forensic evidence, surveillance equipment, and police procedures. Mike was also well-trained and calm in all types of combat situations, once using science and careful strategy to take down a large number of hostiles with ease.
While in Philadelphia , Ehrmantraut married and had a son, Matt , who later started his own family with his wife, Stacey, and daughter, Kaylee. Mike got caught up in crooked activities within the Philadelphia police, and after Matt joined the force, he hesitated when two crooked cops approached him, so they killed him.
After Matt's funeral, Mike murdered the two cops, then fled to Albuquerque to be near Stacey and Kaylee. He took a job as a parking lot attendant at the Bernalillo County Courthouse and also performed for-hire criminal jobs on the side. Mike becomes Saul then known as Jimmy McGill 's associate after Jimmy helps cover for him when Philadelphia officers investigating the deaths of the two cops Mike killed learn of Mike's whereabouts. Through one of his side-jobs, Mike also becomes involved with Nacho Varga , who asks Mike to help eliminate an increasingly-unstable Tuco Salamanca from the Salamanca organization, but Mike instead engineers Tuco's long-term arrest by faking a confrontation in front of police.
