The Engine with An A1 Body and An 9F Chassie, and the rusty old tender betide it. Here they is, The Killdane Experiment from Tales from the scrap sidings 2, The Killdane Experiment where James encounters the monster scrap engine roaming in the Smelters Yard.
Credits to: CyanPlumber/Domix (artstyle) Casey (parts) CaliMom3LE (Parts on the engine modelling for some them) steamtrainmaker (Parts) GoldenStanierBlack5 (Boiler Tubes) Me (modelling for most of them)