8 "Ends Of An Era" At WWE WrestleMania 33
4. Mark Henry's Last WrestleMania
Just like The Big Show, Mark Henry has been in WWE for a long time (more than two decades, in Henry's case) and has seen his 45th birthday come and go. Also like The Big Show, "The World's Strongest Man" will likely be retiring in the next year.
Henry's schedule has been sparse as of late. While he was drafted to Raw in July, he's only made a few appearances on TV since then. While Henry previously stated that he was going to retire in 2016, his low profile in recent months seems to indicate that he's really decided to step away from the ring.
WrestleMania may not represent his last match, but it's likely that it'll be the last time he competes at the show of shows. Expect him to compete in the Andre The Giant Memorial Battle Royal before further winding his career down throughout the spring and summer.