10SAME: ROBIN'S FALLING OUT WITH BATMAN
Dick Grayson is ostensibly the protagonist of Titans and his relationship with Rachel Roth/Raven is the heart of the show. This Dick is a Detroit police officer who stopped being Robin for an unspecified time but has taken up the mantle again in this new city.
It's hinted from the very
start that he had some sort of falling out with Batman (hence the infamous expletive filled line that fans balked at in the first trailer) and struck out on his own because of it. In the comics Dick grew weary of being a teen sidekick to the cold and sometimes egotistical Batman and they clashed a number of times verbally and physically before Dick laid his Robin identity to rest.