The Overwatch 2 x One Punch Man collaboration is now live, until April 6th. Numen Rider Soldier: 76 and other rewards are available for free, alongside new One-Punch-Man themed skins in the shop.
Saitama Doomfist, Terrible Tornado Kiriko, and Genos Genji are the other One-Punch-Man skins, and have bundles in the shop. All 3 of these skins are also available together in a bundle.