The equivalent of 'comical' in French is 'comique'. This term is widely used when referring to something funny or amusing. Say, if you want to describe a person's behavior as comical, you could say 'son comportement est comique'.
In French, 'comic' is usually translated as 'bande dessin茅e'. It's a common term used to refer to comics. For example, when you talk about comics in a store or with friends, you can say 'bande dessin茅e'.