Lady Gaga

Actors, pop stars, athletes, royalty... heavy metal touches every societal corner that celebrities come from.

They're hardcore in their own ways.

Now that would've been a sick collaboration.

From stage production to the same producers, there's plenty of similarities.

Jared Leto goes to extremes to get into character for his movies.

A pop song and a metal song.

She isn't actually, but this will make you laugh.