How do I find out who owns the rights to the name of a musical group?

The 1990s animated series The Mask included a character named "Skillet," who didn't age, dressed in green, could fly, and had a detachable shadow. However, he was a villain, and sent his shadow out to absorb the youth of other people. Skillet's name was presumably based on "pan" as a cooking utensil. It should be noted, however, that the character also borrows elements from Superman villain Mr. Mxyzptlk as well. As well, the voice of "Skillet" was first voiced by Jason Marsden, who supplied the voice of Peter Pan in the animated series Peter Pan and the Pirates