User blog comment:Heckfire/Where is Mr. Monster?/@comment-6417519-20191104063016

Just because you or anyone else is using a character without being sued, doesn't mean the character is in the public domain. Mr. Monster is still under copyright because in Canada (where he debuted), law keeps a work copyrighted until 50 years after the author's death. What company published it is irrelevant..Fred Kelly died in 2005 so has not been dead for 50 years yet.