David Kaye is a Canadian voice actor. He is best known for animation roles such as Megatron in five of the Transformers series (Beast Wars, Beast Machines, Armada, Energon, and Cybertron), Optimus Prime in Transformers: Animated, Professor X / Jamie Madrox / Apocalypse in X-Men: Evolution, Cronus in Class of the Titans, Khyber / Shocksquatch in Ben 10: Omniverse, several characters in Avengers Assemble, the newsreel announcer in the Pixar film Up, and Duckworth in the reboot of DuckTales. He is also known for anime roles including Sesshōmaru in Inuyasha and Treize Khushrenada in Mobile Suit Gundam Wing, and video game roles such as Clank in the Ratchet & Clank series and Nathan Hale in the Resistance series. He is also the announcer for Last Week Tonight with John Oliver on HBO and voiced the Celestial Arishem in the Marvel Cinematic Universe film Eternals. He is also the narrator for The Masked Singer (US).