Originally Posted by Blarobbarg

Meter: Dave Grohl is about a meter long, yes.

Key: Though I've head they're all quite generous people, I doubt any of the Foo Fighters would give you their keys.

Form: I believe the Foo Fighters usually take human form, but I've heard rumors that their drummer turns into a spider at night at drinks the blood of the innocent.

Hopefully that clears everything up for ya.