In Skyrim, we get challenged by http://www.uesp.net/wiki/Skyrim:Tsun and in return of defeating him in a dual, he lets you in the Hall of Valor.
I thought Tsun was a interesting fellow, so I looked him up in the Gods section over at the UESP wiki, and it mentions:
Tsun, Nordic God of Trials against Adversity
Extinct Nordic god of trials against adversity. Died defending Shor from foreign gods. The etymology of the name and the divine sphere hints at Tsun possibly being an older Nordic version of Zenithar (a god purportedly "that will always win"); compare especially to Z'en (Bosmeri), Xen (Altmeri) and Zeht (Yokudan). The example of Stuhn entering the Imperial pantheon as Stendarr should be considered too.
Extinct Nordic god of trials against adversity. Died defending Shor from foreign gods. The etymology of the name and the divine sphere hints at Tsun possibly being an older Nordic version of Zenithar (a god purportedly "that will always win"); compare especially to Z'en (Bosmeri), Xen (Altmeri) and Zeht (Yokudan). The example of Stuhn entering the Imperial pantheon as Stendarr should be considered too.
Now, I know this is another case of who is who, like Alduin=Akatosh, Alduin is not Akatosh, etc.
Thoughts?