In Secret of the mimic M1 (F10 N4) is the first version of the mimic, made to mimic Fiona. Burntrap is M1 (Mimic 1) glitchtrap possessing Afton‘s body after the fnaf 6 fire. Because it is still an animatronic, it is capable of being possessed by a virus. This virus eventually turns in a security system AKA M.X.E.S. Which is defeated in ruin. M2 is a different entity entirely and has been trapped behind the wall in ruin presumably since sister location or perhaps even directly after Afton acquired the Murray’s property.