A new skull in Halo 2 Anniversary called the Prophet Birthday Party Skull. It makes you rock out with the Prophet while you knock him out.
There are new skulls for Halo 2 Anniversary in the Master Chief Collection. I show you the Prophet Birthday Party skull which changes the sounds when you melee the Prophet of Regret in Halo 2 Anniversary campaign. By doing this you also earn the achievement “Needs More Whammy Bar”