Quoted from shakethatmachine:I always assumed so as well, but Rolling Stone says Ace still owns his character. I'm not sure how that works.
Scott
Quoted from Mar 26th Rolling Stone:
Each member of Kiss had designed his own makeup. Criss relinquished the rights to his character when he left (although he's confused about the circumstances), and Frehley maintains that he licensed his. He says he's due to get the rights back soon, a claim Stanley called a "fantasy": "We own it. He sold it." In the meantime, Thayer, who once worked as the band's road manager, wears Frehley's makeup.
Read more: http://www.rollingstone.com/music/news/kiss-forever-40-years-of-feuds-and-fury-