OK so, i have some models that i imported from 3ds max. i want to make them “solid” (i think its called a mesh collider) so that when i put in a first or 3rd person controller i dont fall right through the mesh. like if i run into a wall i want my character to stop at the wall. Any way i can do that?
The two ways to do this are:
A: IN the import section, turn “Generate Colliders” on.
B: Select your object, click COmponent > Physics > Mesh collider
(Thanks for the save there, syclamoth, edited now 
)