The year 2012 was very strong for the WWE in terms of returning superstars. The following wrestlers returned to the WWE:
a. Underaker
b. Triple H
c. Brock Lesnar
d. Chris Jericho and
e. Tensai
Tensai returned as a full time wrestler and is still with the WWE. Lesnar returned on a part time basis and has wrestled 3 times since he returned. Undertaker has fought only at Wrestlemania in both 2012 and 2013. Triple H fought at wrestlemania last year and this year plus had a match with Brock Lesnar at summerslam 2012. Jericho returned almost full time, took a short break and then came back.
No
jeff hardy return to wwe in royal rumbel 2012 and if he is not return jeff hardy never come back to wwe
No
He could possibly return
Survivor Series 2012
No
Chris Jericho
no
March 17
he can return to wwe either survivor series or royal rumble or wrestlemania 28
Jeffs contract with tna expires january 2013 and he might return to the wwe #30 in the royal rumble, if he does return
Shawn Micheals in Febuary 2012.