Your "something" (with blinking eyes) (I really don't know what it is) from the game register.exe reminded me a lot of the boss Father of the Flame from the game Hollow Knight - Silksong! Compare this boss and this "something" from your game
| # | Player | Score | |
|---|---|---|---|
| 1 | Player4603 |
0 | 13 hours ago |
| 2 | Kripskas_Games |
0 | 12 hours ago |
| 3 | register |
0 | 4 hours ago |