If a physical, non piercing attack hits the character for half or more of their health, the skeleton is flung backwards into pieces, and can reassemble themselves for a bonus action, or be used as a weapon/tool by a party member. If taken 20 ft. from the skull, all other bones will move within 5 ft. 

When in this state, HP only applies to the skull, while bones each can withstand 1/10 Max HP(rounded up) of damage before crumbling.

Bones can be reassembled into simple shaped, such as arms and legs swapped, or a ball of bones.

All bones except the skull can be replaced in the groups of:

-Forearms and hands (two sets of each)

-Shins and feet (two sets of each)

-Upper arms (two)

-Femurs (two) and Pelvis

- Ribs and spine

Each addition or set replaces 1/10 of the characters original HP 1/10 (both rounded up)of the new bones original owners HP.

Skeletons do not need food, water, or sleep, and cannot be put to sleep.

When taking a long or short rest, Skeletons reduce themselves to an inert pile of bones, still aware of their surroundings.

Your ability scores each increase by 1.

Skeletons remain at the developmental age of their deaths, though bones can be replaced to change that, and can live possibly forever.

Skeletons vary widely in height and build, from barely 5 feet to well over 6 feet tall, although this can change depending on which species bones you are currently using.

Your base walking speed is 30 feet.

You can speak, read, and write Common and one extra language of your choice. Skeletons typically pick up the languages of other peoples they deal with, including obscure dialects. They are fond of sprinkling their speech with words borrowed from other tongues: Orc curses, Elvish musical expressions, Dwarvish military phrases, and so on.