The Red Hood First Showed up in 1951 as a thief groups scheme.
He then was pushed into a chemical vat burning his whole body and turning his hair green.
The Red Hood dies and out of all that he becomes The Joker.
The Joker kills Jason Todd(Robin).
Jason Todd is reborn from Ra Sal Ghul pool of life.
Jason Todd takes the Red Hood persona for himself.
He begins cleaning the streets of mobsters and their leaders.
Is confronted by Batman and is eventually discovered to be Jason Todd.
Gets beaten, but not dead and puts up the costume and is not seen for quite some time.
Comes back years later to continue what he left of doing this time with a sidekick named Sasha.
Things kind of fade off do to lack of interest.