I think the only Space Marine to ever come with an autogun! He’s shown as 070106/16 in the 1991 catalogue, and as Brother Blake in the 1988 RT3 flyer:
He seems to be named after Madge Blake, who played Aunt Harriet Cooper in the 1960s Batman TV show. The mini himself:
Painted:
Undercoat: Vallejo Mecha Black
Blue: Scale75 Artist Cobalt, highlighted with Primary Blue, then Primary Blue mixed with Titanium White
Black: Scale75 Art Black
Green: Sap Green and Spring green highlighted with Golden Yellow
Red: Bold Pyrrole Red, washed with Targor Rageshade, highlighted with Bold Pyrrole Red mixed with Golden Yellow
Silver: Black Metal, washed with Nuln, highlighted with Heavy Metal, Speed Metal and White Alchemy
Base: Dark Mud followed by Reddish Brown pigments