Season | Team | League | GP | G | A | P | +/- | PIM | PPG | PPP | SHG | SHP | TOI | GWG | OTG | S | S% | FO% |
|---|
| 2025-26 | Bakersfield Condors | AHL | 44 | 12 | 28 | 40 | 3 | 12 | - | - | - | - | - | - | - | - | - | - |
| 2024-25 | TPS | Liiga | 54 | 8 | 44 | 52 | -6 | 8 | - | - | - | - | - | - | - | - | - | - |
| 2023-24 | TPS | Liiga | 60 | 17 | 23 | 40 | -2 | 16 | - | - | - | - | - | - | - | - | - | - |
| 2022-23 | TPS | Champions HL | 3 | 0 | 0 | 0 | - | 0 | - | - | - | - | - | - | - | - | - | - |
| 2022-23 | TPS U20 | U20 SM-sarja | 32 | 18 | 33 | 51 | 29 | 14 | - | - | - | - | - | - | - | - | - | - |
| 2022-23 | TPS | Liiga | 15 | 4 | 5 | 9 | 2 | 0 | - | - | - | - | - | - | - | - | - | - |
| 2021-22 | Québec Remparts | QMJHL | 68 | 13 | 33 | 46 | 20 | 8 | - | - | - | - | - | - | - | - | - | - |
| 2020-21 | Québec Remparts | QMJHL | 30 | 5 | 22 | 27 | -7 | 10 | - | - | - | - | - | - | - | - | - | - |
| 2019-20 | Kärpät U20 | U20 SM-liiga | 20 | 3 | 5 | 8 | 7 | 4 | - | - | - | - | - | - | - | - | - | - |
| 2019-20 | Finland U17 | WHC-17 | 5 | 2 | 4 | 6 | - | 0 | - | - | - | - | - | - | - | - | - | - |
| 2019-20 | Kärpät U18 | U18 SM-sarja | 20 | 16 | 19 | 35 | - | 31 | - | - | - | - | - | - | - | - | - | - |
| 2018-19 | Kärpät U16 | U16 SM-sarja | 3 | 4 | 7 | 11 | - | 2 | - | - | - | - | - | - | - | - | - | - |
| 2018-19 | Kärpät U18 | U18 SM-sarja | 38 | 16 | 16 | 32 | - | 14 | - | - | - | - | - | - | - | - | - | - |
| 2017-18 | Kärpät U16 | U16 SM-sarja | 18 | 5 | 11 | 16 | - | 20 | - | - | - | - | - | - | - | - | - | - |
| 2015-16 | Finland Selects U13 | WSI U13 | 7 | 4 | 6 | 10 | - | 0 | - | - | - | - | - | - | - | - | - | - |
| Total | - | - | 417 | 127 | 256 | 383 | +46 | 139 | 0 | 0 | 0 | 0 | 00:00 | 0 | 0 | 0 | 0.0 | 0.0 |
Viljami has not been part of a trade yet.
No trade history on record.