Cullen's early work includes voicing VOLTRON in the classic cartoon series, which is still widely popular today. He's also lent his voice to other notable characters, like Ironhide in the Transformers franchise and Monkey Punch in the anime series Voltron: Fleet of Doom. What's fascinating is how he can switch between different characters and accents with ease!
One of Cullen's most iconic roles, of course, is as the voice of Optimus Prime in the Transformers franchise. He's been voicing the character since the 1980s and has become synonymous with the role. It's amazing to think about how he's been able to bring this character to life for so many years, isn't it?