John Constantine might still be holding a huge grudge that the peacock network, NBC gave him less than one season before canceling his show
On the “Haunted” episode of Arrow(Season 4,Episode 5), Constantine took a little dig at his former network.
Apparently one of the items that Constantine had Felicity bring him in preparation for attempting to restore Sara’s soul was a dead peacock feather. Felicity was confused over why Constantine would need a dead peacock feather. It turns out Constantine didn’t need the feather for Sara at all. Constantine took the feather and simply used it to scratch an itch on his back. Nothing can be more satisfying than scratching an itch with a dead peacock feather.
To see exclusive pictures from the episode click on the link below