The first metal boss is surely not a Frank. He's more of a John.
My favourite boss is the Dusk/Dawn duo because swords. Really, I'd love to be able to throw more stuff. Like my scythe. Or Elena's dresses. Throwing a potted geranium on John's face would be pretty neat.
TakayaNoriko: Back in my day, we pressed buttons that didn't do anything because we thought it would give us special power-ups. And that's the way we liked it!