Oke this one is for the administrators or someone who works at the Bethesda Softworks.

I am making a gamemode on Garry's mod.

What is Garry's mod?
Garry's mod is a mod for the source engine you can buy it from steam.

My question was,
I am making a gamemode for Garry's mod, that's like I am editing that game to fallout 3 kinda story, and maybe if if I can use the fallout 3 models textures and animations for my enemys and armor part.
It would be awesome if you guys allow that!
Thanks,
Soundblaster

You can contact Bethesda via the e-mail link at the bottom. http://www.zenimax.com/contact.htm

However, I will tell you that using the assets of Bethesda Softwork's games in another game will not be permitted.