But which film could the walk-on role be intended for?

Benefiting Worldwide Orphans, the auction is managed by Charitybuzz and doesn't specify which film the winner of the auction will be appearing in. The two most likely options are Bryan Singer's "X-Men: First Class" and "X-Men Origins: Wolverine 2," both of which have experienced varying levels of movement in Hollywood of late.

There's not a lot of info to go on based on Charitybuzz's official press release, but the organization does drop the hint that, "Although cast info has not yet been announced, the next 'X-Men' film will likely find the series' previous stars returning for more action packed thrills."

While the auction manager is careful not to disclose the project's formal title, the auction listing's image of Hugh Jackman in his "Origins" attire could be a clue as to which film is being offered. It's just as likely, however, that the image was chosen for its value as an icon of the franchise.

Still, with only these two hints to go off of, plus more substantial news surrounding "Origins" casting info and reported 2011 filming schedule, these clues seem to suggest that Hugh Jackman will reprise his Wolverine role before Singer's young mutants head to their "First Class."

No matter which film the auction winner lands, proceeds will benefit children in need, rendering the winning bid on April 1 well worth the price of mutant admission.

Interested in bidding on an X-Men movie role? What do you think of the charitable aspect? Let us know what you think in the comment section or on Twitter!