In Hex Judge, you can customize the interrogator’s portrait and name.
From your Steam Library:
Hex Judge
→ Right Click
→ Manage
→ Browse Local Files
Then open:
Hex Folder
→ User Folder
Place the following files inside:
A square portrait image (1:1 aspect ratio)
A text file containing only the interrogator’s name
The game will load them as your custom interrogator.
You can also use VTuber icons or original characters.
Feel free to experiment and create your own interrogator!