His co-workers at the restaurant remember an enthusiastic, funny, dedicated individual to who they could always bring their problems.
He loved giving his co-workers the business.
"A lot of us he called his weasels," said Julie Kuenzli, one of Mohler-Kerns' co-workers. "He would say, 'What do you want weasel? What do you got going on weasel?'"
The Ada County Coroner said Tuesday the Boise man was killed by a single gunshot wound to the head and listed his death as a homicide.
As assistant manager, Mathew was Eric Gremmo's right-hand man.
"He was just a great, great kid," Gremmo said. "He was very well liked and very popular among his team members."
In addition to working, he was also attending graduate school for business at Boise State. But he did find some time in his busy schedule for recreation, playing in a basketball league once a week.
"The guy was stuck on basketball - anything could be going on," Kuenzli said. "We could be so busy, but he could still keep an eye out on the basketball game on any of the televisions."
Many of the employees at Murphy's had dinner together Tuesday night to remember Mathew.
"You work with people and relationships form," he said. "Those relationships are causing a lot of emotion right now."
Boise Police have not officially named a suspect in the 28-year-old's death. However, police say Shawn Fisher, 35, who's been charged with felony aggravated battery, is connected to the deadly shooting on Franklin Boulevard.
Fisher was in Ada County court Wednesday and had his bond set at $500,000.
Prosecutors say Fisher slammed his vehichle into another man's car at Vista and Canal Monday evening --- the start to a confusing string of events. Officials say he fired a weapon at the driver's direction but shot through the passenger side window and missed the driver.
Officials say Fisher then took off in his vehicle and ended up being Tased and bitten by a police K9 before he was arrested.
Police later searched his house and found bath salts and spice, but it's unclear, prosecutors say, whether Fisher was high at the time of the shooting at Vista and Canal.
Fisher is scheduled for a preliminary hearing March 6.