#7 "Rowdy" Roddy Piper

Previous Wrestlemania Resume:
Wrestlemania - with "Mr. Wonderful" Paul Orndorff lost to Hulk Hogan and Mr. T
Cody has no chance against John Cena? Details HERE
Wrestlemania 2 - lost to Mr. T via disqualification in a boxing match
Wrestlemania 3 - defeated "Adorable" Adrian Adonis in a hair vs. hair match
Wrestlemania 6 - fought Bad News Brown to a double countout
Wrestlemania 8 - lost to Bret Hart in an Intercontinental Championship Match
Wrestlemania 10 - performed guest referee duties in the Bret Hart vs. Yokozuna WWF Championship Match
Wrestlemania 11 - performed guest referee duties in the Bret Hart vs. Bob Backlund "I Quit" Match
Wrestlemania 12 - fought Goldust to a "no contest" in a Hollywood Backlot Brawl

His Finale
Much of early 2009 in professional wrestling focused on Mickey Rourke's Oscar-nominated role as Randy "The Ram" Robinson in The Wrestler. Rourke announced his intention to compete at WWE's Wrestlemania 25, but could not get cleared to compete.
Chris Jericho, meanwhile, used Rourke's publicity to harp on the film's themes of an aging megastar hanging on to "the dream" without recognizing his own mortality to attack WWE Legends who continued to appear on television. Ric Flair would take offense but, because of his own Wrestlemania finale, could not compete; he offered, instead, to corner for Piper, Ricky Steamboat, and Jimmy "Superfly" Snuka, three men whom Jericho had also attacked throughout January and February.
In an elimination-style handicap match, Jericho would make short work of Snuka and Piper, before Steamboat came to life and gave Y2J fits as he nearly took the win. Steamboat fell, getting his solo rematch at Backlash the following month, but Snuka and Piper remained off pay-per-view for the remainder of their lives.

It Was the End Because
Piper had appeared sporadically in WWE and TNA in the early aughts before his 2005 Hall of Fame induction; he made various independent appearances (and a classic cameo on FX's It's Always Sunny in Philadelphia as a Randy "The Ram"-type star), and held the WWE Tag Team Championships with Ric Flair for roughly one week in 2006. That reign, this match, a 2008 Royal Rumble appearance, and a handful of RAW and Axxess appearances were exceptions to Piper having committed to retirement brought on by age and injury.
He co-founded an independent promotion in Portland, OR, in 2012, but passed away in his sleep July 31, 2015.