Bhishma’s story features two curses, a powerful boon and a terrible oath that determined the course of his destiny. There was also the fisherwoman who became a Queen as well as his stepmother and together, they saved the lineage!
Featured characters:
Shantanu, King of the Kurus.
Ganga, river Goddess and first wife of Shantanu. 
Devaratta/Bhishma, son of Shantanu and Ganga. 
Satyavati, fisherwoman who became Shantanu’s second wife.
Parashurama, incarnation of Vishnu who rid the earth of several generations of Kshatriyas; agreed to accept Bhishma as his student despite his dislike of Kshatriyas as a favour to Goddess Ganga. 
Ashtavasus, demi – Gods.
Prabhasa, youngest of the Ashtavasus who took birth as Bhishma.
Parashara, sage enamoured of Satyavati; father of Veda Vyasa.
Indra, King of the Gods; mighty wielder of the thunderbolt.
Brahma, the Creator.
Mahabhisha, Ikshvaku King who was reborn as Shantanu.