Notes:

This isn't a leak, and it's not real.
A Bomberman enthusiast drew our daring demolitionist in the Panoramic Artwork of Super Smash Bros. Ultimate!
Artist: https://twitter.com/GildedPudding
Full picture: https://knowyourmeme.com/photos/1397896-super-smash-brothers
Maybe 'til Smash 6! (If Smash Ultimate gets a sequel, that is…)