One of the drummer's final X post mentioned Linkin Park's late lead singer Chester Bennington, who died by suicide in 2017.

In 2023, Bryar publicly opened up about mental health struggles, per The Independent.

Bob Bryar, former drummer for the band My Chemical Romance, has died. He was reportedly 44. The news was confirmed to CNN by a spokesperson for My Chemical Romance, who shared the following statement: “The band asks for your patience and understanding as they process the news of Bob’s passing.”