If 2025 had a fad, it’d be blind bags, as was the case with Battle Beast, and now Marvel’s Ultimate Endgame blind bags are out tomorrow. AIPT revealed the latest sketch cover headed to the Ultimate Endgame True Believers Blind Bags, with sketches even coming from Marvel Studios exec Kevin Feige. This week, though, new blind bags were revealed that carry a very specific kind of heat: four ultra-rare variants signed by Robert Downey Jr. will be randomly inserted into packs shipping this Wednesday. No guarantees, no pre-orders for signatures. Just pure chaos at the counter.
What makes this reveal stand out isn’t just the Downey signatures, but how Marvel is leaning hard into the blind bag experience as part of Ultimate Endgame’s identity. Between hand-drawn sketch covers, randomized distribution, and now movie-star autographs hiding in plain sight, this release feels engineered to recreate the thrill of cracking packs — only now, it’s happening with a Hickman-era Marvel event book instead of trading cards.
It’s a savvy escalation. Ultimate Endgame already carries “event finale” weight, but tying the comic to signed artifacts from the face of the MCU blurs the line between comics history and pop-culture memorabilia. Not to mention, speculators and collectors will likely drop extreme coin to own, or resell, these sketches.
Whether you’re chasing art, signatures, or bragging rights, this week’s blind bags turn Wednesday’s pull list into a high-stakes roll of the dice.
Check out the four RDJ sketches below.






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