I tried to find comments on Allakhazam that are old enough to substantiate that Fippy wasn't the only gnoll to attack the gates. He was the common spawn -- there were rare spawns:
The other Darkpaws:
http://eqbeastiary.allakhazam.com/search.shtml?id=2896
http://eqbeastiary.allakhazam.com/search.shtml?id=3783
http://eqbeastiary.allakhazam.com/search.shtml?id=12048
(Also here's a rather boring site by a SOE employee: fippy.net/eq/eqgnoll1.php -- add your own http:// to the front. Didn't want linkbacks to this forum.)
They all shouted the same thing about family darkpaw.