I am an absolute layman and unaware whether there are universally accepted (or something like the UN recommended) copyright laws or not and thus, I have not specified as to which copyright laws I am referring to. I would be glad to hear answers discussing any prominent copyright laws.
Ok, so the question is the following: If a painter (either for profitable or non-profitable purposes) wants to paint someone (either living, dead, or fictitious) then does she require a prior permission from the living person himself or the descendants of the dead person or the IP-right holders of the book to which the fictitious character belongs to? On one hand, it sounds completely ridiculous to need to have permission from, say, DiCaprio, if I want to make a painting of him. But in some cases, for example, in the case of some fictitious characters, the demand of the creator of the character to have a say in whether some product related to his character can go into the market or not might sound somewhat rational to, at least, some.
Things can go even more involved in some cases. For example, I might want to paint DiCaprio polluting the whole planet with a bunch of factories and even if DiCaprio might not have any problem with me making a simple painting of him, he might have some issues with me portraying him doing something he would never do. But I can, of course, argue that I have the right to portray my imaginations and I don't claim them to be real at all.
I would love to know what are the standard laws regarding these matters.