Fan Casting Dick Grayson in The Red Hood - Part II (Horror Movie)

These are flashbacks to Jason's time as Robin, specifically when Dick Grayson, otherwise known as Nightwing, was tasked with training Jason with his staff while Batman was away fighting the Joker. Once, Jason and Dick were like brothers, but like everything and everyone else, Jason now hates Nightwing for the same reasons he hates Batman. To this day, Jason still hears Dick's voice in his head as a reminder of his past.