MachLiamon is a Digimon whose name and design are derived from "Mach speed" and Liamon. It is a berserker who lost its intelligence and enhanced its combat instinct. Although it was originally a Lion Digimon, it heaped modification upon modification and arrived at its current appearance. It holds a strong friendship with and high respect for MadLeomon, and when the two meet, they both hate most in the world.
It is similar in appearance and ability to MadLeomon, except that it is armed with pantera claws. It has purple mane and claws, a gray skin, and red eyes.
- Darkness Thrust: Dances quickly around foe while stabbing with pantera claws.
- Demon Fury: Fires its "Spirit" in the shape of a lion's head, which bites the flesh off of those standing in its way as it flies through them.