First, let's take that the general assumptions made about Dook Goo Kau Bai's martial arts ability level are true.
Would any combination of martial arts and martial artists from the CONDOR HEROES TRILOGY be able to overcome him?
In the discussion about the Janitor Monk vs. other DGSD stalwarts, we used the idea of "Super Kiu Fung," because absorbing the inner power of others and making it your own was a DGSD thing. That isn't really a CONDOR HEROES TRILOGY thing, so to keep it more consistent with the CONDOR HEROES TRILOGY, we'll probably use formations.
So, a group of seven Greats (at the peak of their abilities)
1. Cheung 3 Fung
2. Cheung Mo Gei
3. Gwok Jing
4. Yeung Gor
5. Chow Bak Tung
6 Wong Yerk See
7. 1 Deng
This group could use either Mo Dong Sect's 7-man formation or Cheun Jen Sect's Big Dipper Formation.
Does group have a decent chance at prevailing, or are they all dead men?