Tom Brady's absence from the Tampa Bay Buccaneers has been the talk of the NFL world. Fans have come up with various possible reasons for his absence, ranging from his mother's health to his family relationships. Brady himself has been mum on the issue, which has led to even more speculation.One theory that arose was that the legendary quarterback was joining other athletes, including Antonio Brown and Rob Gronkowski, to perform on The Masked Singer, an American reality show which features celebrities singing songs while wearing costumes and face masks concealing their identities.NFL insider Benjamin Allbright debunked this theory, saying that a source with inside knowledge has stated that it's not true.Benjamin Allbright@AllbrightNFLPer source with direct knowledge the Tom Brady/Masked Singer time-off theory is false.Fun while it lasted.132156Per source with direct knowledge the Tom Brady/Masked Singer time-off theory is false.Fun while it lasted.Not all NFL fans were convinced with Allbright's explanation. One believes that Brady wants to announce the news himself and has asked media members to sit on the information.Native Son@NativeSonn@AllbrightNFL So you know but Brady is asking the media sit on the story until he breaks the news himself. It’s weird that none of the talking heads are discussing this on air — at all.@AllbrightNFL So you know but Brady is asking the media sit on the story until he breaks the news himself. It’s weird that none of the talking heads are discussing this on air — at all.Luke Braun@LukeBraunNFL@AllbrightNFL exactly what someone who knew tom brady was on the masked singer would say2013@AllbrightNFL exactly what someone who knew tom brady was on the masked singer would sayGreg Richards@igglesnut@AllbrightNFL If it was true though, wouldn't your source lie to you?2@AllbrightNFL If it was true though, wouldn't your source lie to you?Ian Rapoport@RapSheet@AllbrightNFL Why do you hate Reddit?109410@AllbrightNFL Why do you hate Reddit?Moof@SeanMaffia@AllbrightNFL Your source probably wouldn’t know if he was doing it they have to sign something that prohibits you from telling anybody.Plz don’t hate me for trying to be a smartass3@AllbrightNFL Your source probably wouldn’t know if he was doing it they have to sign something that prohibits you from telling anybody.Plz don’t hate me for trying to be a smartassMax Toscano@maxtoscano1@AllbrightNFL It has never been more obvious that he is on the Masked Singer21@AllbrightNFL It has never been more obvious that he is on the Masked SingerJack Duffin@JackDuffin@AllbrightNFL I’ve been calling multiple source and can’t find an answer…Is the pink suit coming to London?10@AllbrightNFL I’ve been calling multiple source and can’t find an answer…Is the pink suit coming to London?CSUJAKE@csujake@AllbrightNFL My theory is that he wasn't happy with his production so he flew to Germany for a HGH blood transfusion.5@AllbrightNFL My theory is that he wasn't happy with his production so he flew to Germany for a HGH blood transfusion.Burgers and Blitzes@NotToBeTrite@AllbrightNFL Botched plastic surgery14@AllbrightNFL Botched plastic surgeryAlberto Milian@amilian@AllbrightNFL IMO the guy just wants to have more time and spend it with his wife and kids, probably some family event before the kids go back to school at age 45 football training has lost some of his appeal, he just loves to play and preseason does nothing for him1@AllbrightNFL IMO the guy just wants to have more time and spend it with his wife and kids, probably some family event before the kids go back to school at age 45 football training has lost some of his appeal, he just loves to play and preseason does nothing for himThere's really no telling right now what Brady is up to and why he's been absent from the Buccaneers training camp thus far. An appearance on The Masked Singer seems unlikely, but many NFL fans are holding out hope.Amid Tom Brady speculation, who are the other athletes who have been on The Masked Singer?TB12 may or may not be singing on The Masked Singer, but even if he isn't now, that doesn't mean he won't one day. Many other athletes have done so in the past.Two of his former teammates were on the show, including Antonio Brown, who just called out Brady for manipulating the NFL into getting time off. Rob Gronkowski is another one with this distinction.NFL legend and current analyst Terry Bradshaw was also on the show recently. He sang Thunder by Imagine Dragons and Get Your Shine On by Florida Georgia Line.Former Olympic ice skater Jonny Weir was on the show too, though he didn't last very long. Boxer Laila Ali also sang for the audience.In season two, NBA star Victor Oladipo, who wooed the audience with his stellar singing voice, was revealed to be The Thingamajig.Skating legend Tony Hawk participated too, as did former MLB pitcher Barry Zito, who wore a rhino costume.Infamous NFL quarterback Mark Sanchez shocked fans when he revealed himself to the audience. Lonzo Ball, star guard for the Chicago Bulls, sang I Wish by Skee-Lo, Money Maker by Ludacris and Pharrell, and Lean Back by Terror Squad, featuring Fat Joe and Remy Ma.New York Jets v Philadelphia EaglesOlympic snowboarder Chloe Kim, Caitlyn Jenner, Dwight Howard, and Jordan Mailata make up the rest of the athletes who've appeared on the show. Will they be joined by the Buccaneers legend soon?