I know that you can increase the character controller height on the Y axis, but how do you do this on the Z axis? Is there anyway of achieving this?
The CharacterController is a special capsule collider: it can’t be rotated, and is always aligned to world Y - you can rotate the object, but its CharacterController remains aligned to Y. The best we can do is to set its radius to height/2: this turns the capsule into a sphere, which may work in some cases.