the spoiled child 

   available

x — open to any gender
x — preferably rich and somewhat arrogant but totally  a beagle
 

  the nice one  

   available

x — open to any gender but preferably a male
x — always act as the nicest one but actually a real devil

  the logical  

   available

x — open to any gender
x — always seen with his/her book and really not fun to be with

  the mysterious  

   available

x — open to any gender but preferably a female
x — mostly seen alone in his/her room and refused to join any gathering in the house.

  the maknae 

   available

x — open to any gender
x — is really a smile maker and so freaking cute.
x — shows affection to the entire household
 

  simply a note  

All of the point given is totally optional.But please keep it realistic with the plotline name  :)