Characteres (whitout or with animation) are downloading without Texture

Hi folks,

I am dowloading some characteres, and all, exceptr ybot and xbot, are or gray or white, withou texture. I am downloading as FBX or FBX for unity (I am using unity 2019.3)..

Some reason for this?  I am developer trying to learn how to do a game with unity, and i am zero at left in graphics, then, i am need some prefab...

Thanks a lot for help

Moacir Jr.