It can do, but the test is higher, so you're disproportionately more likely to find yourself on the wrong end of a losing lawsuit. Fair use is a balance of a n

It can do, but the test is higher, so you're disproportionately more likely to find yourself on the wrong end of a losing lawsuit. Fair use is a balance of a number of conditions (in the US). One of them is how commercial the use is, and spin off merchandise is pretty commercial.