| Killjoy vs Jin | 57–32 | 64.04% |
| Killjoy vs Reina | 37–43 | 46.25% |
| Killjoy vs King | 37–39 | 48.68% |
| Killjoy vs Hwoarang | 32–38 | 45.71% |
| Killjoy vs Steve | 25–35 | 41.67% |
| Killjoy vs Kazuya | 23–35 | 39.66% |
| Killjoy vs Yoshimitsu | 33–23 | 58.93% |
| Killjoy vs Law | 25–21 | 54.35% |
| Killjoy vs Dragunov | 18–25 | 41.86% |
| Killjoy vs Paul | 25–17 | 59.52% |
| Killjoy vs Lee | 22–20 | 52.38% |
| Killjoy vs Victor | 24–18 | 57.14% |
| Killjoy vs Jun | 22–19 | 53.66% |
| Killjoy vs Lili | 22–18 | 55.00% |
| Killjoy vs Azucena | 22–18 | 55.00% |
| Killjoy vs Asuka | 15–24 | 38.46% |
| Killjoy vs Lars | 21–18 | 53.85% |
| Killjoy vs Xiaoyu | 16–18 | 47.06% |
| Killjoy vs Devil Jin | 20–14 | 58.82% |
| Killjoy vs Eddy | 14–16 | 46.67% |
| Killjoy vs Alisa | 14–14 | 50.00% |
| Killjoy vs Bryan | 15–12 | 55.56% |
| Killjoy vs Feng | 13–14 | 48.15% |
| Killjoy vs Nina | 15–7 | 68.18% |
| Killjoy vs Leo | 10–9 | 52.63% |
| Killjoy vs Leroy | 12–6 | 66.67% |
| Killjoy vs Raven | 5–10 | 33.33% |
| Killjoy vs Zafina | 6–8 | 42.86% |
| Killjoy vs Jack-8 | 7–5 | 58.33% |
| Killjoy vs Claudio | 3–7 | 30.00% |
| Killjoy vs Kuma | 4–6 | 40.00% |
| Killjoy vs Shaheen | 0–4 | 0.00% |
| Killjoy vs Panda | 2–1 | 66.67% |
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.