User blog comment:The ASL Pirates/My Take on WCI/@comment-26058050-20160929053917

One thing that I may point out is the possibility of Urouge being somewhere on WCI. Going back to Chapter 837, Brulee mentioned that Urouge had appeared at one point and could possibly still be around, believed dead.

Only issue with this is that we don't know when he appeared on the Island. Last time we saw him was after Dressrosa Arc watching Kaido commit suicide, however the time between then and now could easily have him arrive on WCI.

Though it's not confirmed, it's a possibility that he could be there, which could very well boost their strength considerably.