I have created four zombie characters for video games which you can download for free from Google Drive:
You can use these characters for free in any of your personal or commercial games. You can sell your own games containing these characters, but you cannot sell these characters on their own.
They have a range of animations that are setup and ready to go.
You can also use these characters in my Udemy course:
Make a Horror Survival Game in Unity
If you need any help setting things up just drop me a question in the Q & A Section on Udemy and I will help you get things working.
Hope you enjoy the characters.