The former Black Sabbath frontman's unpredictable spirit wasn’t just limited to interviews, either. Osbourne delighted in showing up where you least expected him, like lending his voice to the Trolls: World Tour cast roster as the gravel-throated King Thrash, proving he could still bring the heavy even in animated form.

Osbourne preceded the Black Sabbath performance at Back to the Beginning with a set featuring members of his past solo bands. He played "I Don’t Know," "Mr. Crowley," "Suicide Solution," "Mama, I’m Coming Home" and "Crazy Train."

Black Sabbath bassist Geezer Butler shared memories of Ozzy Osbourne's final performance before the rock legend's death at 76, reflecting on their 57-year friendship.