| Mighty Septopus vs King | 220–266 | 45.27% |
| Mighty Septopus vs Jin | 239–241 | 49.79% |
| Mighty Septopus vs Law | 182–209 | 46.55% |
| Mighty Septopus vs Kazuya | 194–196 | 49.74% |
| Mighty Septopus vs Hwoarang | 156–181 | 46.29% |
| Mighty Septopus vs Bryan | 152–145 | 51.18% |
| Mighty Septopus vs Yoshimitsu | 139–129 | 51.87% |
| Mighty Septopus vs Reina | 120–147 | 44.94% |
| Mighty Septopus vs Paul | 123–123 | 50.00% |
| Mighty Septopus vs Steve | 95–145 | 39.58% |
| Mighty Septopus vs Eddy | 110–123 | 47.21% |
| Mighty Septopus vs Lili | 94–125 | 42.92% |
| Mighty Septopus vs Feng | 109–101 | 51.90% |
| Mighty Septopus vs Dragunov | 113–95 | 54.33% |
| Mighty Septopus vs Jun | 90–115 | 43.90% |
| Mighty Septopus vs Azucena | 107–94 | 53.23% |
| Mighty Septopus vs Xiaoyu | 97–93 | 51.05% |
| Mighty Septopus vs Lars | 73–111 | 39.67% |
| Mighty Septopus vs Asuka | 80–102 | 43.96% |
| Mighty Septopus vs Nina | 75–92 | 44.91% |
| Mighty Septopus vs Lee | 67–100 | 40.12% |
| Mighty Septopus vs Victor | 73–79 | 48.03% |
| Mighty Septopus vs Devil Jin | 69–69 | 50.00% |
| Mighty Septopus vs Alisa | 68–64 | 51.52% |
| Mighty Septopus vs Jack-8 | 53–72 | 42.40% |
| Mighty Septopus vs Leroy | 53–56 | 48.62% |
| Mighty Septopus vs Leo | 44–57 | 43.56% |
| Mighty Septopus vs Raven | 41–57 | 41.84% |
| Mighty Septopus vs Heihachi | 45–49 | 47.87% |
| Mighty Septopus vs Lidia | 34–41 | 45.33% |
| Mighty Septopus vs Zafina | 39–33 | 54.17% |
| Mighty Septopus vs Clive | 31–36 | 46.27% |
| Mighty Septopus vs Claudio | 24–37 | 39.34% |
| Mighty Septopus vs Kuma | 26–34 | 43.33% |
| Mighty Septopus vs Shaheen | 29–21 | 58.00% |
| Mighty Septopus vs Anna | 5–24 | 17.24% |
| Mighty Septopus vs Fahkumram | 13–16 | 44.83% |
| Mighty Septopus vs Panda | 4–14 | 22.22% |
| Mighty Septopus vs Armor King | 6–8 | 42.86% |
| Mighty Septopus vs Miary Zo | 7–4 | 63.64% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.