You mean the ´image´ of the priest and the elf on the website? Yeah, Unity Asset Store $25 each I believe. I think the hog-man is $35.
Here, I will help you out if you want to sue Unity for stealing the copyright on your branding
Elf Girl $10
https://www.assetstore.unity3d.com/en/#!/content/4286
Your amazing branding.. you didn´t even bother to use your own render... nope, just stole the picture directly from the artist.
Here is pig head $40
https://www.assetstore.unity3d.com/en/#!/content/3770
Again, didn´t even bother to do your own render, just stole it from the artist and put it on your website for branding.
And here is the Priest also $40
https://www.assetstore.unity3d.com/en/#!/content/2259
But you are in luck, those last two were done by the same artist, so when you sue them for copyright infringement, you only need to sue two people.
Is that branding? Can you please define it again?