SCP Foundation

SCP-035, known as "The Possessive Mask," is a Keter-class SCP object of the SCP Foundation, consisting of a white Venetian comedy mask that transforms into a tragedy mask and secretes a corrosive liquid. It possesses human minds, granting control and causing brain death and rapid decomposition of the host, while telepathically manipulating people.

SCP-049, known as the "Plague Doctor," is a humanoid entity that disguises itself as a medieval plague doctor and possesses a lethal touch that stops biological functions, often creating zombies (SCP-049-2) after performing rudimentary surgeries on corpses, convinced that it is curing a mysterious "Pestilence" that it perceives in everyone, displaying a polite but dangerous personality, classified as Euclid.

SCP-076 "Able" is an SCP Foundation anomaly consisting of a stone cube (SCP-076-1) and a lethal humanoid entity (SCP-076-2) within, known as Able (or Abel), a Semitic warrior with superhuman abilities. Upon awakening, he flies into a rage and attacks humans until neutralized, reforming afterward in his coffin, a resurrection process that can take hours to years. His nature is Keter, and he has led a Mobile Task Force, causing havoc and requiring extreme containment due to his strength, speed, and ability to materialize weapons, making him one of the most dangerous anomalies contained by the Foundation.

SCP-682, known as the "Immortal Reptile" or "Hard to Destroy Lizard," is one of the most feared and powerful creatures of the SCP Foundation, a vaguely humanoid reptilian monster with incredibly malevolent intelligence and an amazing capacity for adaptation and regeneration, making it virtually impossible to kill and a staunch enemy of all life forms.

SCP-334: known as the Star Fox, is a Euclid-class anomaly consisting of a superheated plasma cloud with the shape and behavior of a red fox (Vulpes vulpes). It moves without touching the ground, emits electromagnetic radiation, and feeds by converting matter into plasma. Its containment requires magnetic fields due to its extreme heat.

SCP-169, known as the "Leviathan", is a Keter anomaly of the SCP Foundation: a colossal marine arthropod between 2000 and 8000 km in length, whose existence dates back to the Precambrian era, capable of causing earthquakes and tsunamis with its movements, making it unstoppable and representing a global threat, with the Foundation monitoring its apparent awakening.

SCP-1471 is a fictional mobile application called "MalO ver1.0.0" which, once installed, sends the user images of a humanoid creature with a canine skull head, designated SCP-1471-A. This causes hallucinations and a gradual obsession that can lead to paranoia and, in extreme cases, suicide if exposure is not stopped in time. The application, which appears in non-developer app stores, simulates combating loneliness by sending photos of the entity, which progressively approaches the user until it is seen in their peripheral vision or reflections, eventually becoming a constant and disturbing presence.

SCP-999: Also known as The Tickle Monster, this is a friendly, amorphous, orange gelatinous mass from the SCP Foundation series that induces euphoria in those who interact with it. It behaves playfully, like a dog, hugging people and tickling them with its pseudopods, causing a state of happiness.

SCP-096: Known as the Shy Boy, this is an extremely dangerous humanoid creature that attacks anyone who sees its face. Once someone observes it, whether directly, through a photograph, or video, SCP-096 enters a state of emotional distress, covering its face while crying and screaming for one or two minutes. After this, it runs to the location of the person who saw it, kills them, and then reverts to its usual docile state. There is no known material or method that can stop its advance once the pursuit begins.

SCP-173: This humanoid statue, constructed of concrete, steel rods, and spray paint, is extremely hostile and immobile while in direct eye contact. It will move at high speed if eye contact is broken and attack, killing its victim by snapping their neck. Containment of SCP-173 requires at least three people to enter its chamber together, and two of them must maintain constant eye contact until all three have exited and the door has been closed.

SCP-914: This is a classified safe anomaly known as The Mechanism. It is a large clockwork machine that refines or degrades objects placed in its Entrance booth. Through a control panel with a knob offering five settings (Coarse, Rough, 1:1, Fine, Very Fine), the machine can transform objects in predictable or unpredictable ways.

SCP-001: It is an entity or entities capable of initiating and exercising control over anomalous phenomena on Earth and in all regions of space observable by current modern scientific methods.

The uniform of the SCP Foundation workers is: White shirt and pants, metal vest on top, black boots and 3 weapons, knife, M-40 pistol and AK-40.

(Because there are many SCPs and few spaces, I will add the SCPs that you comment on)