Increase two ability scores by 2 and 1.

Slime Folk aren't inherently good or bad and can be any alignment.

Your size is medium.

Your base walking speed is 30 ft.

Slime folk are seemingly immortal and can survive indefinitely if left undisturbed. Their appearance does not change over time and they cannot die of natural causes. They say some of the first ones are still roaming these lands, looking as young as ever.

Lets the slime folk pass through grills, bars and other obstacles with enough openings on them as long as all clothing and armor are removed.

Lets the Slime Folk change the shape of any chosen parts of their body or even change their appearance entirely for a short period of time. This trait does not let one change their texture or color.

The Slime Folk can stick and climb any wall/vertical surface with a climbing speed of 10 ft as long as the wall/vertical surface is not too smooth to stick (e.g. glass and ice), or covered in any liquid.

The Slime Folk can adjust the acidity of any or all parts of their body between neutral and highly corrosive. The most acidic being able to dissolve stone and metals (except gold and platinum).

Form a highly corrosive layer of acidic slime tissue around your fist area to make your punch a lot more zesty.

Lets you separate a small portion of your body to create a small creature that is under your control and can perform tasks for you, at the cost of -1 max HP per Slimeling. The creature has a telepathic connection with you up to 100 ft. You can see hear what the Slimeling is experiencing. The connection breaks once the range is exceeded and can be re-accomplished if the Slimeling gets back in the 100 ft of the player. The 1 HP is regained once the Slimeling merges with its creator.

The range increases by 50 ft for every level after 3.

Slime Folk can hibernate at will to protect themselves from cold, and will be forced to hibernate at temperatures lower than zero degrees celsius. Hibernation replaces the cold damage vulnerability of the slime folk into a cold damage resistance, while simultaneously making it so that the they have the incapacitated condition until the hibernation ends. It takes a minute to hibernate and 5 minutes to wake up from hibernation. The slime folk can sense it when the hibernation process starts out of their control and can prepare for it within the one minute that it takes to hibernate. The slime folk cannot consciously decide when to leave hibernation and will automatically go back to normal once their body temperature becomes higher than 10 degrees celsius.

Cold

Acid

Poison (after the 4th level)

You can speak, read and write in common.

If you want to play this race, I recommend you also get this monster: https://www.dndbeyond.com/monsters/6852064-slimeling