  A theory on bi-spatial random attractors developed recently by Li \emph{et
al.} is extended to study stochastic Fitzhugh-Nagumo system driven by a
non-autonomous term as well as a general multiplicative noise. By using the
so-called notions of uniform absorption and uniformly pullback asymptotic
compactness, it is showed that every generated random cocycle has a pullback
attractor in $L^l(\mathbb{R}^N)\times L^2(\mathbb{R}^N)$ with $l\in(2,p]$, and
the family of obtained attractors is upper semi-continuous at any intensity of
noise. Moreover, if some additional conditions are added, then the system
possesses a unique equilibrium and is attracted by a single point.
