when i import my fbx character into unity, material and texture are not correct. those lokks transpernt or you can say inside out look.
Is the problem still there if you assign a new, standard Unity material without textures?
If yes: Sounds like your normals are inverted (which turns the mesh “inside out”). I’m not familiar with Blender, but every 3D programm should have a tool somewhere to show vertex normals and invert them.
If no: The problem lies with your imported material. Create a new one inside Unity and assign your textures there.
A screenshot might help though 