I play Thor with a general Neutral Good alignment.
I will also make references towards Norse Mythology, and some general characteristics from the comics. Basically, this is movies!Thor with a touch of myth, so I may use Norse words here and there.
If Thor is pressed in battle, he can enter into berserker rage, in which his capabilities are increased tenfold. However, he cannot tell who is friend or foe in this state. (He may be coaxed into being calm, however, by certain few people.)
Otherwise, Thor has the enthusiasm of a child (but not the naivety of one) and deals with cultural differences rather well.
Thor currently resides at the Avengers tower to continue aiding in the protection of Midgard, as well as watch over his dearest brother Loki.