"It's too obvious" if the Red Hood Leader was the Joker. Granted he still could be but after seeing this it struck a cord with me
Well, to the avid comic book reader, both the leader and this blackmailed henchman are "obvious".
The leader is "obvious" because he is the Red Hood and he keeps talking about chaos.
The henchman is "obvious" because, like the Joker, he is a chemist and he was forced to join the gang.
At least one of them is a red herring but you never know, they could both be red herrings and the Joker could be someone else completely.
A few years back, I was reading the Star Wars KotOR comic book and the writer kept hinting that some of the characters would become members of the the Sith Triumvirate (from the KotOR II video game) but in the end, none of them did.
I really think and hope that the Joker turns out to be this henchman but you never know. Maybe that 's also too obvious.