You have to go through the Vs. Undertaker Road to Wrestlemania and complete the "Challenge Matches." Each RTWM has a total of 6, and the 6th one is at Wrestlemania where you face off against a Legend, but that match is open if AND ONLY IF you've completed the other 5 challenge matches.
Vs. Undertaker
Week 2 (Backstage Brawl): Randy Orton
Week 3 (Backstage Brawl): Kozlov
Royal Rumble (Backstage Brawl): Ziggler
Week 9 (Tables Match): Big Show
Week 12 (Backstage Brawl): Batista
WrestleMania (Last Man Standing): The Rock
You must find these people and WIN the challenges before the Rock is available, and then you must beat him at Wrestlemania.
The rock
Yes, but you have to unlock him...
no
Yes, although you have to unlock and buy him.
I don t know
You can't unlock The Rock on Smackdown vs Raw 2009.
Yes, The Rock is in SmackDown vs Raw 2008.
You have to pre-order from selected places
Cheat code ThePeoplesChamp
The Great One
You can't.
He is not in Smackdown vs Raw 2010.