One of the entities held by the SCP Foundation. It's a translucent slime creature also known as the tickle monster.
It is a Safe-class SCP under the SCP Foundation's containment. It is known for its adorable appearance and friendly attitude. It is one of the most, if not the most friendly anomaly in the Foundation.
SCP-999 is very playful and has a major interest in people that are unhappy or hurt in any way. People that have depression, after interacting with SCP-999, are cured of their problems, obtaining a positive view on life.
SCP-999 also has the ability to produce pleasant smells depending on the person in questions favorite smell.
It has been confirmed, that the creature is also willing to save others at all costs from other SCP’s and even jumping to take a bullet for someone.
SCP-999 is one of the only (if not the only) SCP thats allowed to freely roam the facility should it desire to.