In chapter 967 we see the Roger Pirates tracked down the remaining three Road Poneglyphs to Fish-Man Island, Wano Country, and Zou.
Oden continued adventuring with the Roger Pirates until they reached the final island, where Roger found the treasure left behind by Joy Boy.
As I reread the chapter, this panel caught my attention.
The character highlighted in red has a certain resemblance with Dr. Hiriluk. Is it possible that Hiriluk joined the Roger Pirates at some point?