Meet Abigail, Michael's younger sister. Like Michael, Abigail has a slimmer physique compared to other Machokes, but she still has the strength of one. Abigail loves her brother, and would do anything to make him happy.
Abigail also kept her tail when she evolved, showing that maybe their parents had tails, too.

Abigail the Machoke © me
Machoke © Game Freak