The cast of characters is diverse in age groups and original country- although many are from Japan and the same area in Japan, and quite a few are kids, the majority of the cast are adults, and a few are from America (with a possible one or two from the UK). With the exception of Shoya (and Yui), all the joining characters are originally Black Swarm subordinates.
The Black Swarm consists of Dr. Gidoh the mastermind, his understudy Dr. Misaki, and the rest of the Four Generals, generals Jegard, Hydel, and Elisha. Each fighting general has subordinates; elite subordinates Gonbei and Hiroto, Hydel's subordinates Akane and Minoru, and Mistress Elisha's subordinates Raphael, Janie, and Blade.
As very minor characters, the citizens of Cimexus are represented solely by Yamato's partner K-Buto, Tsubasa's partner Y-Ite, and various beetle elders.
by Age GroupEdit
It is clear that Elisha is from a very rich western family. While Hydel is a very strange name that doesn't seem to have any culture; the best guess is he may not be from America or Europe, but possibly Haiti or some other place?