You know, CMS has already defeated the pink bean. With a group of GMs. 
 
  Anyway, the pink bean's hp is about 
2.1 billion,
the other five statues have a really hing amount of hp too.
The wisemans' hp are about 
300mil,
The bird-like statues which are Huigin and Munin (i guess, weird names) have about 
450 mil hp,
and the goddess-like statue has over 
600mil hp. 
AND they can use any buff, status and can regenerate hp and mp...... 
Anyway a lot of ppl in maplesea gave up on their way to the pink bean, they say the mob there are too strong  

  and they can hardly defeat the other 3 lesser bosses.
I wish those of you who want to challenge the pink bean good luck and be ready to return in 2 ways.
1) 
Defeated2) Win but poor (
unless u are those crazily rich king of guy) 
Anyway GMS got Knights of Cygnus?, Maple SEA is going to have them soon.