Rokushiki Robin MAJOR UPDATE 12/8/15 by Shinjojin on DeviantArt

The Six Powers, Wiki

Rokushiki

Rokushiki, Wiki

Do top tier One Piece characters use the 6 powers? - Quora

World of Shinjoin! — The Nico Robin: Rokushiki style Project! (part2)

Rokushiki

Roblox Grand Piece Online Rokushiki Showcase!

Shigan, One Piece Role-Play Wiki

Honestly Oda probably should have just expanded on Rokushiki instead of creating Haki. He could have definitely made it to where there are techniques that allow you to hit logias and armament

Shigan, Wiki