Kuperan

In the legend of Siegfried the Dragon Slayer, Kuperan is a giant who has the key to a mountain where a dragon lives.

He betrays Siegfried, who wants to save the virgin Kriemhilde from the rock, twice and in the end is pushed from the rock by Siegfried, where he breaks into a thousand pieces.

Then the bold Siegfried spoke: "Your speech is lost

Since I now see with my eyes the virgin born high. "

He took him by the arm and threw him from the stone:

He jumped by a thousand pieces; that pleased the maid.

(Karl Simrock (Hrsg.): Das kleine Heldenbuch. Stuttgart and Berlin)