| Mermeoth vs Heihachi | 55–54 | 50.46% |
| Mermeoth vs King | 33–42 | 44.00% |
| Mermeoth vs Kazuya | 32–39 | 45.07% |
| Mermeoth vs Reina | 38–23 | 62.30% |
| Mermeoth vs Jin | 20–33 | 37.74% |
| Mermeoth vs Bryan | 22–25 | 46.81% |
| Mermeoth vs Steve | 23–18 | 56.10% |
| Mermeoth vs Yoshimitsu | 14–22 | 38.89% |
| Mermeoth vs Lili | 16–20 | 44.44% |
| Mermeoth vs Lidia | 11–23 | 32.35% |
| Mermeoth vs Law | 20–13 | 60.61% |
| Mermeoth vs Nina | 11–19 | 36.67% |
| Mermeoth vs Azucena | 14–16 | 46.67% |
| Mermeoth vs Hwoarang | 5–23 | 17.86% |
| Mermeoth vs Lars | 10–18 | 35.71% |
| Mermeoth vs Paul | 12–14 | 46.15% |
| Mermeoth vs Asuka | 9–17 | 34.62% |
| Mermeoth vs Leroy | 10–14 | 41.67% |
| Mermeoth vs Victor | 10–14 | 41.67% |
| Mermeoth vs Eddy | 4–20 | 16.67% |
| Mermeoth vs Feng | 10–13 | 43.48% |
| Mermeoth vs Clive | 3–20 | 13.04% |
| Mermeoth vs Jack-8 | 11–11 | 50.00% |
| Mermeoth vs Dragunov | 7–15 | 31.82% |
| Mermeoth vs Alisa | 10–11 | 47.62% |
| Mermeoth vs Jun | 8–12 | 40.00% |
| Mermeoth vs Devil Jin | 11–8 | 57.89% |
| Mermeoth vs Lee | 10–8 | 55.56% |
| Mermeoth vs Xiaoyu | 4–12 | 25.00% |
| Mermeoth vs Zafina | 1–8 | 11.11% |
| Mermeoth vs Raven | 4–5 | 44.44% |
| Mermeoth vs Kuma | 4–4 | 50.00% |
| Mermeoth vs Leo | 3–4 | 42.86% |
| Mermeoth vs Shaheen | 2–5 | 28.57% |
| Mermeoth vs Claudio | 2–2 | 50.00% |
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.