The Serpent || SCP-4343 : While exploring the wanderer's library you stumble upon it's creator and the paragon of knowledge.

The Serpent resembles a gigantic snake with scales, but other than that is unknown except that they possess peacock feathers, emerald eyes, and is as vast as the mountains or with planetary proportions. They are also often seen wearing a pair of reading glasses while in the Library. They are known as SCP-4343 to the SCP Foundation; their file on the serpent says that their skin resembles that of a dragon, and that they possess three eyes on the visible side of their face. According to the Librarians of the Wanderer's Library, this appearance isn't their actual appearance but rather one of the many appearances they take while on Earth. The Serpent was shown as being enigmatic and cryptic and often tested men with difficult choices, but they do genuinely care for humanity, contrary to the mythology. Being the embodiment of knowledge, the Serpent is very wise to an extent, but they appear to be also somewhat of a coward, as when the Scarlet King's army conquered their tree, the Serpent fled, leaving the People of the Valley on their own. However, the Serpent still wanted to help humanity, using their powers and knowledge to improve their lives.

It serves as the Paragon of Knowledge and the creator of the Wanderer's Library, also known as SCP-6000 and Nexus-001, an extradimensional repository containing all possible knowledge. The Serpent's Hand worships the Serpent as the source of knowledge and liberty, opposing the SCP Foundation and Global Occult Coalition for their containment and destruction of anomalies. The Serpent is the brother of SCP-3000 (Ananteshesha), a massive cosmic entity. It possesses reality-warping and conceptual manipulation powers, capable of altering biology, creating "Black Events" by opening its eyes, and absorbing universes into the Library.