Invented: Pre _Christian Era

Where: Scandinavia

* According to Viking legend, there was a banquet in which the 12 most important gods attended in Valhalla
* Loki (who is pure evil) crashed the party which equals 13
* Balder, who was the most loved god, was killed indirectly by Loki
* In Christianity, Judas is considered the 13th guest to the last supper. Judas betrayed Jesus.