Music
Rex Features
The rapper met up with the Sheffield group's drummer Matt Helders for the filming of an online video diary.
Diddy said: "Yo, what's up? It's your boy Diddy. I am the newest member of the Arctic Monkeys.
"Now I'm not going to be singing. I'm not going to be playing any instruments, but I am part of the crew. I'm part of the entourage."
He added: "So if y'all f**k with the Arctic Monkeys then y'all got to f**k with me. A lot of people probably don't know this, but I am probably the biggest Arctic Monkeys fan.
"So when I met this guy it was like a dream come true and he's the biggest Puff Daddy fan in the world. We having a bromance."
The Bad Boy Records founder also claimed that he would sign the rock group to his label in America in a move that would be "the future of the Monkeys".
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