The W-LF, also known as Z-Mecha Beast K9, is a Mecha Beast model built at the Sterling Factory, which is located in the same cave that the family resides. The W-LF Model has had two designs so far, the first belonging to Arianna Sterling, with a gray and gold edition and now Charlotte "Charlie" Sterling, with a white and red version, nicknamed "Wolf".


We need them to be ready at any time. Mecha Races are dangerous, as Dad says, so he wanted mine and my brother's Mecha Beasts to be able to move on their own
– Charlie explaining W-LF aka Wolf.

The W-LF model is based off speed and agility. While it is stronger in those points, the W-LF is still strong. Similar to the LK-E model, the W-LF model has an updated Turbine Heart, which is extra efficient at converting ambient slug energy into fuel using molecular transference. While it is unknown for Arianna's W-LF if it was able to change forms, Charlie's can. So far, W-LF is installed with a "Bike Mode", allowing it to transform into a motorcycle. Bailey is still in the process of making an "Aquatic Mode" and "Flight Mode". She is having some issues with Aquatic Mode and hasn't been able to fully get it to work.

In addition, W-LF is installed with a Voice Command, making it easier to transform into Bike Mode.


  • W-LF is based off Timberwolf
    • Arianna's is based off a normal colored timberwolf.
    • Charlie's is based off a white wolf, or arctic wolf. 
Slugterra characters