(F/N) is close to the door, he slowly opens it. He aims his pistol at both corners, he then looks up and sees his mother tied up on a chair on a platform above him. And there was an electric floor, then a voice is heard.
"Ah, welcome Dark-" He sees your face.
"Hang on, who are you, this is only reserved for the Dark Night. Wait, you must be that (F/N) Officer, then welcome."
"Give. My. Mother. Back." (F/N) seethed.
"This is your mother? Well then I'm sorry but she must be rescued by Batman or she will die."
Batgirl enters the building. "Ah, we have the Batgirl here, how nice."
"What are you doing here?" (F/N) asked.
"To keep an eye on you." (F/N) sighed.
"Could've just tag along instead."
"Here's the deal, I'm going to time you-"
'He's in the room in the middle, same height as the platform, but how do I get up there?'
"-and I'll make sure too watch your every move-"
(F/N)'s eyes look at Batgirl's grapple.
'I can use that, but what do I do first?'
(F/N) notices the spikes on the side, they could kill him and his mother if he tried to rescue her.
'I'll have to take out Riddler first, then rescue my Mother, if I screw up, she could die. I have one shot.'
As Riddler turned his back, (F/N) grabs Batgirl's Grapple, making Batgirl both blush and shock her.
"What are you-"
"Quiet." (F/N) aims the grapple and fires, he zooms up to the giant glass window, he crashes through it, and tackles Riddler.
"WHAT THE-"
"Here's a Riddle for you, What's black and blue and green all over?" (F/N) Smirks.
"Oh god."
"Wrong answer, the real one is. You." He knocks Riddler out.
He grapples to his Mother and frees her. She hugs him as he hugs her.
"Thank you (F/N)."
"Thank god you're okay Mother." Tears were forming in his eyes.
Barbra watched the scene, she smiled. Happy to see (F/N) with his Mother.