I've been randomly browsing the wiki, and i found out about motor and motor6ds. I know that they're used to make custom characters, but what's the difference of the two?
Motors are used for the constant rotation of something. For example, a windmill. Motor6Ds, however, are complicated. Motor6Ds are used in creating rigs. A rig is the setup that allows you to animate something using the animation plugin. The Roblox character used Motor6Ds, as that is better to constantly changing the rotation of a motor.
most likely the same, just Motor6Ds are often used for characters