SCP-149 - The Blood Flies
…By the time the subject is able to feel any effects, the first generation of SCP-149 has already grown inside the subject's body.
SCP-121 - Concrete Cradle
Instances of SCP-121-2 normally resemble animals capable of locomotion on land, but have been known to take on humanoid forms and forms that do not resemble any known animal.
SCP-2063 - A Past Vision of the Future
“Congratulations! By reading this message, you have just told an alien piece of hardware what to do.”
SCP-1762 - Where The Dragons Went
“It's strange to see how much your world has changed; it is even stranger to see how we now appear in this place. In Fantasy, we are much bigger. Or maybe you've grown taller?”
SCP-037 - Dwarf Star
Its current enclosure is located deep underground to prevent detection and to facilitate radiative cooling into the surrounding bedrock.