User blog comment:Feroza/Vegapunk's research team: Possible members/@comment-25926617-20160927154410/@comment-27930128-20160928060609

There are some evidence related to Crocodile, Germa66 and Vegapunk.

The Baroque Works Jolly Roger - Bird like emblem that look same with Germa66.

Baroque Works mini series - Check out the cover page for ch405, the person standing next to Crocodile. His attire resembles the Germa and with the number 1 printed on his shirt. The cover page for ch412, Mr 1 sits next to Crocodile and the same outfit with Germa. Check this http://www.mangareader.net/one-piece/172/11 middle panel and the fat guy on the right with number 66.

Germa and BW hierarchy - Mr 0, Mr 1, Mr 2, Mr 3, Mr 4 and so on. Reiju being the Zero, Ichiji, Niji, Sanji, Yonji. With Germa's goal is to expand their powers. The same case with BW as stated in http://www.mangareader.net/one-piece/165/13 where Crocodile wants military power.

While these evidences are source of Crocodile's inspiration, I believe that he still connected to Germa and Vegapunk with the combination of his high knowledge of DF. Well, of course he is experienced in DF because they did do some research on it (DF).