SCP-049 is a humanoid entity, which bears the appearance of a medieval plague doctor. While SCP-049 appears to be wearing the thick robes and the ceramic mask, which are all part of his own biology. SCP-049 is capable of speech in a variety of languages, though tends to prefer English or French. While SCP-049 is cordial and cooperative with Foundation staff, it can become especially irritated or at times outright aggressive if it feels that it is in the presence of the "Pestilence".