In a dream where you see yourself as a comic book character, this represents a particular aspect of your personality – your thoughts and behaviors may be inspired by these comics in real life. For example, if you had a comic issue where your boss killed all the other characters in the comic and left only you alive, then it might mean that you are the only one contributing at work while others may have been slacking off often.
If you continue seeing comics in your dream, maybe you had a hint that your subconscious is trying to tell you something through the images of each panel in this particular comic. Try to read between the lines and grasp the ideas shown before you instead of dismissing it as for kids.