Gold Town is the upper-class area, where the wealthy and well-off live in comfort and luxury, and plays host to Global Electronics, the foremost provider of electricity in Unit Blue, a commodity not everyone can afford to have all the time.
In Night Town gangs and punks run the streets, and all the local kids go to school at a church, taught by a nun and a young teacher, in hopes of giving them what they need to escape their meagre living.
Night Town is the dank and grimy setting for most of Gad Guard, where Hajiki and his family live along with Katana, the Jacque Bruno Gang and a host of other characters.
A Gad has many peculiar abilities and can take shape into a number of things depending on the personality and thoughts of the owner.
A Techode is one of the three things that sprout from a Gad, and is also called a "Gadrian" occasionally by characters who aren't aware of the difference between the two.
These robots are "born" after contact with the Gad's owner while they're having a strong or serious emotion in an area occupied by a lot of metal.
It is implied that those with pure or good intent end up with Techodes, while those with darker, more twisted feelings getting a hold of a Gad leads to the creation of A-Techodes or Gadrians.
The five main Techodes of the series; Lightning, Zero, Thunderbolt, Messerschmitt and Hayate are all named after World War II-era fighter planes.