A pantheon of deities worshipped by pre-Christian Europeans throughout what is now Germany and the Scandinavian countries.
The Norse gods and goddesses comprise a pantheon of deities and spirits that were worshipped in what is now Iceland, Sweden, Norway, Denmark, Germany, parts of the British Isles and other northern European countries. They were mostly distinct from the other pantheons that were extant in nearby regions (Celtic, Slavic, Finnic, etc). The most well-known are Odin/Woden, Thor, Loki, Heimdall, and Baldur.
Modern fiction sometimes modifies this mythology to make the Norse gods aliens (DC Comics, Stargate SG-1) or otherwise powerful beings (In Supernatural, Loki is actually an alias of the archangel Gabriel).
Thor's Battle Against the Jötnar (1872) by Mårten Eskil Winge