Kmates are a very strong type of lettermoguses, which are only beaten by αmates and Ωmates. These entities are extremly agressive and dangerous, making them above planetary level threat entities! They are formed by around 5000 Qmates. They also have "spider arms" (Or tentacles / tendrils) that are similar to the Emate's arms, but way bigger and stronger.
They're even bigger than Amongpolis and basically any medium-sized planet. They can destroy it and pierce it with their massive spider arms / tentacles / tendrils / whatever they are.
These guys are literally 500 megameters. To compare, the earth is only 12-13 megameters, meaning Kmates are around 40 times bigger than our planet. That's spooky!