Alastor is a flying goat demon from Movieland's Underworld in the Viewtiful Joe series. He appears as a recurring boss, and sometimes as a playable character. He is also known as Blade Master Alastor, The Midnight Thunderboy, Stylish Alastor, and occasionally by the nickname Al. Though he is originally allied with Jadow, Alastor doesn't give much thought about his position, but instead longs to seek out "the ultimate battle". He sees himself as the arch-rival of Viewtiful Joe, and always appears with the intent to defeat him. Alastor gave Joe the title "Viewtiful", after seeing him in battle. He is voiced by Mikey Kelley in the games, and Ross Lawerence in the anime.