Once your character is animated, you can refine its movement by editing and filtering the animation data.
For precise control over keyframes, you can modify the function curves in the FCurves window.
To speed up or slow down the entire animation, you can manipulate your entire animation by adding and manipulating points on a Timewarp curve. See TimeWarp curves.
In the Character Settings pane, there are various filtering options available. For example, the Floor Contact option makes sure that your character’s feet do not go through the floor.