What to know

• Peter Cullen, the Montreal-born actor who lent his calm and steady voice to Optimus Prime in the "Transformers" franchise, has died at age 85, his family says.S1
• Cullen voiced the heroic Optimus Prime in the Transformers TV series and then the Hollywood films.S2
• Peter Cullen, the legendary voice actor best known as Optimus Prime in the Transformers franchise, has died at the age of 85.S3
• Peter Cullen, who lent his distinct voice to the role of Transformers character Optimus Prime, has died at the age of 85.S4