Kaijuville (also known as Kaiju City) is a small city with an estimated population of 83,095 people. The city was named this way due to its location famous for kaiju attacks on previous cities that settled there, like the November 1952 Bloxzilla attack.)

It has many historical and modern landmarks, like the Ultimablox Spire (broke the record for the tallest building), the Denim Warehouse Skyscraper (supplies the most common clothes), the Shinagawa Lab (used for kaiju research). The city is located in Rohio.

The oldest tall building constructed that is still standing is the KKC Twin Towers, which started construction in 1956 and finished construction in 1978.

Kaijuville / Kaiju City was founded in 1902, and is home to the tallest building in Robloxia, the Ultimablox Spire.