Peter Cullen (born July 28, 1941) is a Canadian-born American voice actor who voices the Autobot leader Optimus Prime in Transformers: Prime.
- Peter Cullen also voices the original G1 and the live-action movie versions of Optimus Prime and is quite famous for his broad voice.
- Peter Cullen would often speak in Optimus' voice.
- Peter Cullen is also noted for voicing Eeyore in Winnie the Pooh.
- In addition to Optimus, Peter Cullen also voiced Ironhide in the G1 cartoon.