Kuroshitsuji, Ansatsu Kyoushitsu Recommendations
The main character in both is a supernatural/ultrapowerful being who can pretty much do whatever it wants. It will be a hard time killing either Korosensei or Sebastian. Comedy also plays a huge part in both shows, although the humor in Black Butler is much darker. Both series also have huge casts.
Both of these anime series have Supernatural power and they are using their supernatural power to do some comedy