The pre skip admirals follow the RYB color model, with each admiral representing a primary color in this model. https://en.m.wikipedia.org/wiki/RYB_color_model
The two new post skip admirals follow secondary colors in the RYB model, Green and Purple. But in this model there is still one final color not represented. Orange.
At this point, Kizaru is the last of the pre skip admirals that is still an admiral, with Akainu being promoted and Kuzan leaving.
If Kizaru were to betray the gorosei and hence lose his position, that would create an opening for an orange admiral.
I think the orange admiral will be a seraphim. Fire is orange and the lunarians can use fire. York is teaming up with the gorosei. Whereas Stella always sought to create humane inventions, I think York will be more unhinged, collaborating alongside Caesar and Judge in order to create the strongest seraphim.
I think this seraphim could be based off Kaido. Kaido is the strongest creature, the WG had his DNA and used it to create Momo’s fruit, and Kaido’s giant horned appearance could serve as a homage to Pluto from astroboy.
Not only that but the dragon is a zodiac symbol.
Ultimately, I think S-Oni, based off Kaido, will be the admiral Orange Dragon. He will replace Kizaru after Kizaru defects and will ultimately be defeated when Luffy goes to war with the marines.
If Zoro and Sanji fight Fuji and GB, I think Orange Dragon will be defeated by Yamato, with the fight allowing her to finally confront and overcome the trauma caused by her father.
The two new post skip admirals follow secondary colors in the RYB model, Green and Purple. But in this model there is still one final color not represented. Orange.
At this point, Kizaru is the last of the pre skip admirals that is still an admiral, with Akainu being promoted and Kuzan leaving.
If Kizaru were to betray the gorosei and hence lose his position, that would create an opening for an orange admiral.
I think the orange admiral will be a seraphim. Fire is orange and the lunarians can use fire. York is teaming up with the gorosei. Whereas Stella always sought to create humane inventions, I think York will be more unhinged, collaborating alongside Caesar and Judge in order to create the strongest seraphim.
I think this seraphim could be based off Kaido. Kaido is the strongest creature, the WG had his DNA and used it to create Momo’s fruit, and Kaido’s giant horned appearance could serve as a homage to Pluto from astroboy.
Not only that but the dragon is a zodiac symbol.
Ultimately, I think S-Oni, based off Kaido, will be the admiral Orange Dragon. He will replace Kizaru after Kizaru defects and will ultimately be defeated when Luffy goes to war with the marines.
If Zoro and Sanji fight Fuji and GB, I think Orange Dragon will be defeated by Yamato, with the fight allowing her to finally confront and overcome the trauma caused by her father.