Gerhard Barkhorn was a real life German aviator second only to Erich Hartmann in both German, World War II and total aviatory skill by kills.
I quite randomly thought up Joseph Weiss as an intimidating-sounding Germanic name.
Hiroyoshi Nishizawa was a real life Japanese aviator who is suspected by some historians to have been Japan's most successful fighter ace.
Arbiter is both a real life term used to designate a neutral decision maker and the name of a powerful alien warrior in the Halo series.
Alois is the middle name of the current Pope, His Holiness Pope Benedict XVI, formerly known as Joseph Alois Ratzinger. Gottlieb is a name I found by looking through the German surnames category in Wikipedia.
Rheingold is an altered naming of Rhinegold, a treasure that the dwarf Alberich sought and gave up love in order to get, and used to rule a kingdom.