If you asked any hero (and even some villains) what the most powerful weapon in the entire universe was, you would get a unanimous and also very unexpected answer.

An answer that would catch you completely off guard.

Richard John Grayson-Wayne's puppy-dog eyes.

His eyes are so damn bright blue, fucking glowing and sparkling and apparently innocent (never mind that Dick is anything but innocent: his gaze is deceiving!) that it is literally impossible to escape their control.

Some might think that Dick's puppy-dog eyes worked only when he was still a child.

Poor fools.

It doesn't matter if Dick is a grown adult.

His secret weapon will always work.

Not even the damn Batman is immune to his gaze: his willpower would collapse at a faster speed than Flash's as soon as he meets his firstborn's puppy-dog eyes.

And yes: Bruce repeatedly subjected his son to a blood test to see if Dick had some meta-gene that gives him the greatest superpower in the entire multiverse.

(Besides the fact that it would seem that Dick can also make friends with anyone but that is another matter.)

The results were always negative but Bruce began to suspect that his machine could not detect only his son's meta-human abilities.

Not even fucking Deathstroke The Terminator stands a chance.

Not to mention Dick Grayson's sibling, friends, and honorary JLA family. They might be the most powerful heroes in the universe or the most dangerous vigilantes on Earth, but they have and will always come out defeated against Dick's lethal weapon.

With his puppy-dog eyes Dick could literally achieve anything and he could have easily taken over the world.

And you know you're screwed when even Alfred Pennyworth, the omnipotent and all-knowing butler of the Wayne family, was not immune to his gaze.

Dick, bastard that he is, has never hesitated to use his secret weapon to get whatever he wants.

Movie night with his best friends, a little vacation with his family, sibling bonding, letting his father rest when he gets loaded with work, going for ice cream with the world's deadliest mercenary just to get him out of his lonely and pain-filled bubble, recreational activities with the JLA, a lunch with Lady Shiva, etc.

The list is literally endless.

But of course Dick Grayson has a plan B in case someone manages to escape from the power of his puppy-dog eyes.

It was not a possibility but Dick did not want to find himself unprepared: after all, he was raised by the most paranoid man in the world.

Blackmail material.

And a lot too.