An OP mostly "told" from Richard's "perspective". Enjoy.

(Open on a scene of Richard back to back with Giovanni, dressed as one of Giovanni's minions, Richard's outfit differed by a white hockey mask. The camera pans from Richard to Giovanni as the first lines play.)

Two antiheroes will soon be faced,
With a truly dangerous enemy.

(The camera pans over to a young girl in a purple jacket holding a glass of red wine, even though she is clearly underage. Over her looms a shadow that grins malicously, reaching out as if beyond the reach of anyone else.)

How many more have to be purified?
Just who is this vigilante willing to fight?

(Cut then, the shadow still looming, Percy, looking at evidence as a jail cell is shown in the background with a hole in the wall, implying a breakout.)

The lines between justice and vengence become blurred,
The law can't be trusted, simple as that.
That is why Richard,
Is gonna fight.

(Camera pans back to Richard in a new scene, he stands with Mera and looks over a warehouse, masked with malice in his eyes.)

And as the story continues he can't escape.
The price his sins with bring.

(Camera pans to reveal Percy. Richard books it, dashing down the street past the main cast of the origional show.)

At the end of the day someone has to try!
But that doesn't make him the good guy!

Nonetheless he will fight all the same!
To create a pure world,
With his Epithet Pure and see,
Impurities erased.