1. We know that kuro is his fastest form has speed comparable to soru
2. Nero used a weaker unrefined version of soru
3. “While Soru grants the users the ability to move at disappearing speeds, there are other people capable of achieving such a feat or moving at such speed where people cannot see them (discounting Devil Fruit users such as Enel and Borsalino) without the technique (or at least calling out the technique's name). Some of the known characters are Laffitte, Riku Doldo III, Dellinger, Hakuba, Minotaurus, etc”
Other characters have also shown high speed pre soru like
2. Nero used a weaker unrefined version of soru
3. “While Soru grants the users the ability to move at disappearing speeds, there are other people capable of achieving such a feat or moving at such speed where people cannot see them (discounting Devil Fruit users such as Enel and Borsalino) without the technique (or at least calling out the technique's name). Some of the known characters are Laffitte, Riku Doldo III, Dellinger, Hakuba, Minotaurus, etc”
Other characters have also shown high speed pre soru like
- Lafitte ,razor , chapter 440, dodging ace's fire fist.
- Sanji ,razor,chapter 415, used in the middle of party table kick course against jyabura.
- Luffy,razor,chapter 315, used against foxy's noro noro beam. dash, chapter 316 , used against foxy in the mirror room of foxy's ship.
- Satori,razor, chapter 247,used to dodge luffy's gattling gun.
- Shura,dash,chapter 248, used against chopper
- Luffy , razor, chapter 242 , used against the white berets.
- Crocodile , razor, chapter 206 , used to dodge luffy's gattling gun.
- Mr 4 , dash, chapter 185, used against chopper.
- Pell , razor, chapter 169, used against BW soldiers.
- Dalton ,razor, chapter 136 , used against wapol's guards.
- Zoro , dash, chapter 109 , used against mr 9. chapter 107 , used against BW soldiers ( the moonlight scene).
- Don krieg , dash , chapter 65 , used against luffy ( the mast scene ).
- Kuro , no need for explanation