What made the first season so much fun was that it was unpredictable and unfortunately with this season it kind of lacks that. Not to say this that season wasn't fun, because I really liked it and there were amazing twists, but you could see that the original excitement is kind of waning from the cast.

Jae Suk- pretty much the same from the first season and again very funny to watch.
Min Young- you could tell this season she was a bit out of it during some episodes because at this point everyone came to just rely on her and it wasn't really fair.
Sehun and Sejung really stepped up this season and were less background players and more main role.
Jong Min- as always, the idiot, but it seemed more exacerbated this season. Must admit though I felt in a couple episodes that he was actually really trying.
Jae Wook- what happened? He was practically nonexistent this season. It honestly just felt to me that he was there to fulfill some sort of contractual agreement.

Looks like there will be a third season and even though this latest season was a bit of a disappointment, I still look forward to it.