| Mellboy vs King | 19–17 | 52.78% |
| Mellboy vs Kazuya | 10–23 | 30.30% |
| Mellboy vs Lili | 10–22 | 31.25% |
| Mellboy vs Steve | 12–12 | 50.00% |
| Mellboy vs Law | 8–14 | 36.36% |
| Mellboy vs Reina | 13–9 | 59.09% |
| Mellboy vs Miary Zo | 3–18 | 14.29% |
| Mellboy vs Hwoarang | 4–16 | 20.00% |
| Mellboy vs Bryan | 5–14 | 26.32% |
| Mellboy vs Dragunov | 9–10 | 47.37% |
| Mellboy vs Nina | 7–7 | 50.00% |
| Mellboy vs Jin | 4–8 | 33.33% |
| Mellboy vs Feng | 7–5 | 58.33% |
| Mellboy vs Armor King | 3–9 | 25.00% |
| Mellboy vs Jun | 3–8 | 27.27% |
| Mellboy vs Paul | 3–7 | 30.00% |
| Mellboy vs Asuka | 5–4 | 55.56% |
| Mellboy vs Devil Jin | 4–5 | 44.44% |
| Mellboy vs Lars | 4–5 | 44.44% |
| Mellboy vs Lee | 4–4 | 50.00% |
| Mellboy vs Jack-8 | 1–6 | 14.29% |
| Mellboy vs Alisa | 1–6 | 14.29% |
| Mellboy vs Azucena | 4–3 | 57.14% |
| Mellboy vs Victor | 2–5 | 28.57% |
| Mellboy vs Raven | 4–3 | 57.14% |
| Mellboy vs Eddy | 2–4 | 33.33% |
| Mellboy vs Fahkumram | 2–4 | 33.33% |
| Mellboy vs Leroy | 2–3 | 40.00% |
| Mellboy vs Heihachi | 2–3 | 40.00% |
| Mellboy vs Clive | 2–2 | 50.00% |
| Mellboy vs Xiaoyu | 0–3 | 0.00% |
| Mellboy vs Leo | 1–2 | 33.33% |
| Mellboy vs Anna | 2–1 | 66.67% |
| Mellboy vs Lidia | 0–2 | 0.00% |
| Mellboy vs Yoshimitsu | 1–0 | 100.00% |
| Mellboy vs Claudio | 1–0 | 100.00% |
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.