A fake study conducted by BrickWarriors in 2014 found that the use of training dummies reduced training-related minifigure deaths by 86.34%. They're also a delightful way for a knight to show off his shiny new suit of armor. Or a minifigure with anger management issues can use it as a punching bag. The uses are endless, really.
Frequently Restocked: Black, Brown
Limited Edition: Dark Tan