| Plankton vs Eddy | 6–30 | 16.67% |
| Plankton vs King | 14–11 | 56.00% |
| Plankton vs Reina | 10–12 | 45.45% |
| Plankton vs Kazuya | 9–11 | 45.00% |
| Plankton vs Hwoarang | 8–8 | 50.00% |
| Plankton vs Asuka | 5–9 | 35.71% |
| Plankton vs Paul | 7–6 | 53.85% |
| Plankton vs Steve | 1–10 | 9.09% |
| Plankton vs Lili | 2–9 | 18.18% |
| Plankton vs Law | 4–6 | 40.00% |
| Plankton vs Jin | 3–7 | 30.00% |
| Plankton vs Devil Jin | 3–7 | 30.00% |
| Plankton vs Yoshimitsu | 3–6 | 33.33% |
| Plankton vs Bryan | 4–4 | 50.00% |
| Plankton vs Lars | 4–4 | 50.00% |
| Plankton vs Nina | 2–6 | 25.00% |
| Plankton vs Jun | 1–6 | 14.29% |
| Plankton vs Victor | 3–4 | 42.86% |
| Plankton vs Dragunov | 2–4 | 33.33% |
| Plankton vs Alisa | 1–4 | 20.00% |
| Plankton vs Kuma | 2–3 | 40.00% |
| Plankton vs Jack-8 | 1–3 | 25.00% |
| Plankton vs Leo | 3–1 | 75.00% |
| Plankton vs Lee | 2–2 | 50.00% |
| Plankton vs Zafina | 2–2 | 50.00% |
| Plankton vs Leroy | 1–2 | 33.33% |
| Plankton vs Azucena | 2–1 | 66.67% |
| Plankton vs Xiaoyu | 2–0 | 100.00% |
| Plankton vs Feng | 0–2 | 0.00% |
| Plankton vs Panda | 1–1 | 50.00% |
| Plankton vs Claudio | 0–1 | 0.00% |
| Plankton vs Shaheen | 0–1 | 0.00% |
| Plankton vs Raven | 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.