Swagger, the beloved, 145-pound bullmastiff who joined the Browns as the team's first live mascot, passed away Friday. He was 6 years old.

Swagger, who joined the Browns as a puppy at the start of the 2014 season, battled cancer throughout the past year.

On top of regular appearances on Dawg Pound Drive and events throughout the community, Swagger ran through the tunnel at every Browns game at FirstEnergy Stadium from 2014 to the midpoint of the 2019 season. The lone "home" game he missed was in 2017, when Cleveland faced the Minnesota Vikings in London.

Swagger's son, SJ, took over for him in Week 10 of the 2019 season and will carry on the role into 2020 and beyond. Swagger served as the Dawg Pound Captain in his final game with the Browns.