Unforgiven is a PPV on the Raw brand. It appears in Smackdown Vs Raw 2006, Smackdown Vs Raw 2007, and Smackdown Vs Raw 2008. Taking place shortly before No Mercy and after Summerslam, it is the third Raw PPV. It has only four matches (in Smackdown Vs Raw 2008) due to having an Elimination Chamber as it's main event.
The show starts with three matches on the Raw pre-show, Heat. The show starts with only four matches (in Smackdown Vs Raw 2008). It has an Elimination Chamber match in the main event, similar to No Mercy.