User blog comment:Zack Tan/Volume 7 Intermission/@comment-26135947-20150903151531/@comment-110.55.2.135-20150905055740

If there are players being transported every 100 years (according to PDL) then the possibility that the Marine City is a guild base is very high.

If we assume that the Six Great Gods to be the first group of players to be transported and count back for 600 years, then we still have 3, 100 years with empty slots - Six Great Gods (600th), Eight Greed Kings (500th), and 13 Heroes (200th). Empty slots would be 400th, 300th, and 100th. This should give us atleast 3 players (1 being the lowest possible number to be transported x 3) for the missing years.