Right click the image below & select 'copy link address'.
Open up your browser.
Paste the link in the search bar.
Press enter to go to the link address.
Right click the image.
Select 'save image as'.
Save the image.
Rename it to 'characters'.
Drag & drop the image into:

C:\Program Files (x86)\Steam\steamapps\common\Vampire Survivors\resources\app\.webpack\renderer\assets\img

Then just let it replace the file & you're done.