Puffy stickers came as 4 characters: Batman, Superman, Supergirl, and Wonder Woman
These are most commonly found on the red header cards, shown below.
These were also found on the Blue header cards, though quite rare.
Puffy Stickers & Album came in a larger package with a cardboard backing, and came with characters not available in the sets of 4 above. Characters include Hawkman, Flash, Green Arrow, Penguin, and Aquaman.