 For all points and purposes, SCP-457 appears to be a sentient being composed of flame. SCP-457's actual composition is unknown, and has proven to be invisible and undetectable by any known means, but is shaped out by the flames it produces, often assuming a human-like form if given sufficient fuel to assume that size. SCP-457 has been observed to communicate through writing letters out of its own flames, charring them onto the wall or other surfaces, and more rarely through speech, created via high-pressure superheated air and the crackling and pops of flames.