 Mardaka's superpowers are known as siddhas, and amongst others he has the "siddhi" of sky-striding and armoured skin.He fights using an Urumi, a double-edged flexible sword, although his has magical qualities.The basic narrative structure of "Black Siddha" is similar to two earlier works by Pat Mills, "Sláine" and "Finn", in that it utilises elements of an existing mythological framework (and in the case of the "urimi", a real-life weapon) to both provide background and drive the story.