Rauffen

Rauffen is an overmotivated, but good-natured musclehead, more likely to shout at the top of his lungs in excitement than to talk normally. When Ehrenfest managed to defeat Dunkelfelger in a match of treasure-stealing ditter, he was enthusiastically praising the victors for their strategies and taking delight in the quality of the match despite his own home-duchy losing.


 * Looking at the japanese name ルーフェン, "Rufen" as transcription seems to resemble the japanese more. "Rufen" stands for "rufen" which means "to call" in German. The translator Quof decided to translate ルーフェン to "Rauffen" instead of "Rufen" as "Rufen" only consist of five letters, which is quite short for a noble name in comparison to other names. As the etymology of "raufen" fits the character and looks kind of similar to "rufen", Quof decided on "Rauffen" with an added  to make the name at least seven letters long.


 * Cambridge Online Dictionary
 * Wiktionary, the free dictionary