due to skeletons not really having bodies, they stand a better chance in poison could and such, giving them a +2 to their constitution score, and a +1 to any other ability score.

not counting their previous lives, skeletons can be any age. skeletons don't age, so theoretically they can live forever. however, wear and tear take a toll on their bones, and they usually die around the age of 360 years old.

Although good and neutral skeletons exist, Skeletons typically lean towards a chaotic alignment, whether it's chaotic good, neutral, or evil.

Skeletons typically come from humans, though humans vary in size, their size is medium regardless.

though similar to humans, skeletons are much lighter, giving them an extra 5 ft. of speed. Skeletons base speed is 35 ft.

Due to the fact that skeletons don't have eyes, magic was needed to make them able to see. In addition to seeing normally, you can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You cannot discern color in the dark.

You can restore any limb after it is detached or destroyed by simply finding a suitable replacement, then using your action to attach it.

You are immune to disease, being poisoned, and poison damage. You do not need to eat or breathe. Instead of sleeping, you enter an inactive state. You do not dream in this state; you are fully aware of your surroundings and notice approaching enemies and other events as normal.

You may, as an action, collapse your form into a pile of bones. While you remain motionless, you are indistinguishable from a normal pile of bones. In this state, you are prone and your speed is 0.

 You've managed to control the energies that sustain you to allow you to speak. You can speak, read and write Common, as well as the language of your creator.