He often produces, writes, composes his own music, music for his band and also for the company. His compositions have won many awards.
He is considered as S. Korea's biggest fashion icon from his fashion sense to his unique hairstyles there is probably no kpopper out there who doesn't know of GDragon's existense.
For an idol who's debuted 9 years ago he's just getting better.
If all this doesn't make you believe how awesome he is, then you should check out for yourself. Just check out any of BigBang's music or GDragon's solo stuff. You'll realize why he's so big in Kpop