Also, Shiva and Loki are not evil. I'm not supporting Hinduism or... "Norsism"? But it's not alright to have no idea what you're talking about.
"Evil is what you don't like", guess who I'm quoting. If you think about either of the "Ten Commandments", the first command is "Thou shalt have no other gods before me." So, if one worships any other god, than YHWH, he's an evil devil-worshipper already.
By the way, "Norsism" is called Ásatrú.