This isn't an action super hero show like the title would suggest. In fact it's hard to define this series. It's primarily a comedy with romance and a small amount of fantasy. At first things may seem exaggerated and over the top but once the story gets going it is very involving and laugh out loud funny and satirical sometimes when you least expect it. There is a shift of mood when things get too serious or too funny so it never gets too boring. Only the last few episodes have a bit of drag and frustration. But less so than many other K dramas of the time. The characters are funny even the supporting characters especially the secretary Go and the younger brother. Lee Dong Wook shows amazing range from crazy bad to deeply in love Very versatile. Shin Se Kyung is actually well cast in the role, a more glamorous and more sophisticated looking actress wouldn't have been right. The best thing is the series makes you laugh.
Worth a watch just bear with some drag at the end.