Conforme explicado pelo roteirista Robert Gordon para a MTV , não há história por trás:
Gordon: “By Grabthar’s Hammer” was a temp line. It was basically the Hammer of Thor, but Grabthar just sounded so silly. I kept meaning to change it, but around the production offices, they started to make t-shirts, it started to sink in a little bit.
Rickman: The ending scene, where Kwellek is dying, and I say the “Grabthar’s” line for him. There were all these different layers with these characters. It is such a great acting challenge. You are only as good as the script, really.
Long: The funniest line, at the mall. “By Grabthar’s Hammer . . .what a savings.” I just saw Nick Frost and he said he and Simon Pegg and all those guys, that’s the line they quote all the time.