This is the 10863rd most frequent Korean word.
그보다
"그보다" means "than that" or "more than that."
Here, '그보다' compares the importance of two matters, placing emphasis on the latter.
그보다 더 중요한 문제가 있습니다.
There is a more important matter than that.
In this sentence, '그보다' asks if there exists someone superior in quality or characteristic to the mentioned person.
그보다 더 멋진 사람이 있을까요?
Could there be a more wonderful person than that?
'그보다' is used here to suggest seeking an improved alternative compared to what is currently present.