Is it possible to buy Lego Marvel Superheroes mini-figures separately?
LEGO typically does not sell individual minifigures from its licensed themes due to licensing restrictions. Often, another company has an exclusive license to produce action figures from a franchise, which means that LEGO is only allowed to sell building sets. These may contain figures, but there has to be a real buildable component. That's why we see &quot;Battle packs&quot; like this one in the Star Wars theme:

With that said, there is a strong secondary market for minifigs. You can often find the popular characters on eBay, Bricklink, or even Amazon. For the specific minifigs that you are interested in, you may want to check out the superheroes category on Bricklink.