(ID picture, and avatar image belong to the respected artists)
SCP–682 is one of the most dangerous and powerful monster held in captivity by the SCP Foundation. It is a massive, intelligent reptilian monster harboring an express desire to destroy all life. This alone would make 682 a formidable and vicious threat fit to do battle with the likes of Godzilla, but the beast’s true horror lies in its ability to recover and regenerate from any injury that would invariably kill any other being as long as a single tiny part of its body remains intact, similar to DBZ villains such as Cell and Majin Buu. In addition, 682 also has the ability to adapt and change in order to fight off new challenges, such as shape-shifting and gaining immunities certain substances.
The average human beings have a Psionic Resistance Index of 24. SCP-682 however has been tested with a PsiRI far beyond that,and so placing it above the threshold of most Psionic effects.
SCP-682's look interestingly enough, was mostly modeled off of a badly decomposed baluga whale corpse discovered washed up on a beach in Russia.
Due to a containment breach by SCP-███, SCP-079 and SCP-682 were contained within the same chamber for 43 minutes. Observers noticed that SCP-682 was able to type and communicate with SCP-079, including telling of 'personal stories' between themselves. While SCP-079 was not able to remember the encounter, it appears to have permanently stored SCP-682 into its memory, often asking to speak to him again.
The Foundation has attempted to kill it by many times by utilizing other SCPs. This has always failed so far, even when using reality-warping beings and items. For instance, one of the attempts involved equipping SCP–826, two bookends that bring any story put between them to life, with a text called "The Generally Nice, Friendly Thing That Can And Will Kill SCP–682 Permanently if it So Much As Spots That Damn Lizard" describing a friendly monster with the stated ability to permanently kill 682. However, after they sent SCP-682 into the story, 682 killed said monster, and when they recovered the text it had been renamed "The Generally Nice, Friendly Thing That Tried To Kill SCP–682 Permanently But Failed" and was now much longer, detailing an epic battle between the creatures, which 682 won.
And SCP-053 likes the thing! It even seemed to like her back, actively trying not to scare her when they first made contact and even letting her draw on it with her crayons.