User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-69.140.237.23-20120219224852/@comment-70.54.115.173-20120220001415

The U is often dropped in Japanese. For example, they would write "pink" with the phonetic characters reading "pinku" and simply not pronounce the U at the end. So, Furogi can be pronounced Furogi or as Frogi,

Zinogre is used in official Monster Hunter merchandise, but it isn't a different name from Jinouga. Ji and Zi are both ways or writing the same sound; the sound probably doesn't exist in English at all but is similar to both. Similarly, the "er" sound doesn't exist in Japanese, so they commonly substitute a trailing "a". "Ou" is just one way of writing what we'd pronounce "oh". So Jinouga and Zinogre are just different ways of writing the same name.