I am still not sure who to use for my story.  As I want to match my friends character.  I think B. A. P.  is best suit their personality. 

Or maybe you can suggest a group that can match the following character. 

1) Cool smart and scary person,  doesn't talk much,  A rapper and dancer ,recording producer plays guitar,  and a  OCD. 

2) a mean person coz he's brutally honest.  Loves eating, steal other people food out of their plate,  smart and flirty.  Can sing high notes,  good vocalist.  Plays piano. 

3) well,  this person is someone who loves cooking. Went to cooking school.  A pretty boy. Visual.  always takes care of others but a very clumsy person.  He's like an umma of the group. Plays drums. 

4) the leader,  the manager,  music producer,  scary person.  Vocalist.  Like the appa.  Can plays many instruments 

5) maknae.  Rapper,  good dancer.  Loves bread and anime. Draws well too. Clumsy and forgetful person but sweet. 

6) maknae line.  Model.  Loves baking,  dark music.  A depressed person, but tends to get silly and hyper if ate too much sweet things. 

Well these are the main characters in a story.  So I hope you can give some suggestions.