Wrenchtools resemble quadrupedal walking wrenches with either two- or three-toed feet. The kind of wrench they resemble depends on the subspecies, which includes the following three:
- Crescent Wrenchtools, which are part salamander and part crescent wrench.
- Pipe Wrenchtools, which are part salamander and part pipe wrench.
- Hex Wrenchtools, which are part hex key Allen wrench and part newt.
A Wrenchtool's behavior usually depends on the kind of Wrenchtool they are; if they are a Crescent Wrenchtool then they will most likely be brave and daring, if they are a Pipe Wrenchtool then they will most likely be irritable and grumpy and if they are a Hex Wrenchtool then they will most likely be intellectual and organized. Like all Tools, they normally have to scramble to get ore and other necessary supplies they would need to survive.