"Untouchable" is a posthumous single by 2Pac, featuring Krayzie Bone, from the album Pac's Life. Remixed by Swizz Beatz, it was the street-single released opposite the lead-single, "Pac's Life". The single debuted #91 on the Hot R&B/Hip-Hop Singles & Tracks and #21 on Hot R&B/Hip-Hop Singles sales on the December 2, 2006 issue of Billboard magazine. 2Pac's verse has some similar lyrics from other songs that include: drunk freestyle, "Killuminati", and the unreleased song "War Gamez". 2Pac at times used lyrics from unreleased tracks in order to make an updated track sound better.
A pre-mix of the original version leaked onto the internet which features Hussein Fatal and E.D.I. Mean. The final mix of the original, with Yaki Kadafi and Storm, has yet to leak, although a snippet of Kadafi's verse over the original beat is available.
The unreleased, but leaked "Untouchable (Freestyle)" is a version recorded after the initial sessions for the song "Untouchable". The instrumental itself was remixed to a more "live" setting with 2Pac laying down vocals while heavily intoxicated.
The song was re-mixed from the Supernova version and released under the title "Legendary" on Eye Legacy. This official album version does not feature 2Pac. However, the version with 2Pac can be found online.