Collapsed buildings present a major problem even in the era of cthulutech. It wasn't long after the invention of the majority of mech designs that they were useful in moving rubble to help find survivors. However the size and weight meant they were not always the best machine for the job. A standard mech will be able to survive in many harsh conditions but to survive the harshest terrain they require refits that often take weeks to install. In Tokyo, katana tech, a mech construction organisation saw an opportunity, and thus was born the Tengu.
The Tengu is designed for search and rescue in hazardous environments. Its specially designed armor allows the unit to survive the most extreme conditions including radiation and high pressure without compromising on the pilots control. A series of surveillance technology mounted as a prominent nose gives the Tengu its iconic name. These sensors include listening devices that discern a persons voice even if its is under several tons of rubble as well as the ability to view in any part of the spectrum to help locate the target. The Tengu is also equipped with a small cutting laser to allow it to remove small obstacles in its path.
The standard Tengu unit has seen widespread usage in many organisation including many police forces. A version for the NEG military is being considered which expands on the Tengu mighty listening capabilities. In secret trials the Tengu X prototype has just been complete which allows the user to detect in the occult and mystical dimension as well as its more mundane dimensions.
