Bhishma - the Uberman in Mahabharat

This is a document in progress, as I read the feats of Debabrata aka Bhishma in Mahabharat

Ganga hands over Debabrata to Santanu, Sambhava Parva

Santanu has not met his son for years. One day, while roaming around banks of Ganga, he notices that the river has suddenly become shallow. Bewildered, he inspects and finds a youth who has restricted the majestic course of river by his divine weapons. "Capable of this feat, who are you, son?", Santanu asks. The youth disappears after casting an illusion.

Santanu then calls Ganga and asks her to show her son. Ganga appears and hands over the same youth. Santanu rejoices at his son, and knows that he exceeds his father in capabilities.
Ganga has taken Debabrata and asked the greatest teachers in different realms(heaven, earth, underworld) to teach her son. The education found a worthy student.

Painting/Oleograph - B.P. Banerjee, 1923. Original might have been printed in Germany, but not sure due to ignorance of the technicalities of the printing process.  On lower left corner in the image from British Museum, "Roy, Babajee & Co, 182 Lower Chitpore Road" is mentioned. Chitpore Road is the old aristocracy and cultural hub of Bengal.

Debabrata gives up right to the throne and takes up Brahmacharya, Sambhava Parva

When Satyavati's father hears Debabrata say that he is not going to marry to prevent any conflict between his line and that of Satyavati's children - all the hairs of Satyavati's father stands on its end in glee.