While WWE 12 featured a robust roster of wrestlers, The Rock was not included as either a base roster character or a downloadable content option.
However, The Rock has been featured in various WWE games throughout the years, including:
* WWE 2K14 (as a pre-order bonus)
* WWE 2K15 (as a downloadable character)
* WWE 2K16 (as a pre-order bonus)
* WWE 2K17 (as a downloadable character)
* WWE 2K19 (as a downloadable character)
So while he wasn't in WWE 12, The Rock has been a popular addition to other WWE games.