((If Satsuki is rich and has a butler, then she's Batman. Would want to make Ryuko Batman as well, but that would make Nui the Joker...))

Satsuki Kiryuin watched as the sun hid behind her city. "Soroi, I'm afraid I will be late for dinner."

"Another night, then?" Her butler stated, knowing the answer to that question. "Should I at least prepare tea?"

Satsuki nodded as she removed Junketsu and hung him out. There were two places that Satsuki ever felt safe. The first was a tower. It was a tall structure and so easily visible that whoever breaches the tower would be seen all over the world. As long as that tower stood tall, a monster would not so easily reveal itself.

Satsuki looked at the clock and corrected the time. This opened up a secret passage that Satsuki descended. Her second hiding place was first found under the Kiryuin manor. It was not the best place, swarming with flying rodents. However, as long as that monster walked in light, then the shadows would hide her.

Satsuki put on a suit and cape as she pulled the cowl over her head. By day, she was heir to REVOCS and master of Honnouji Academy. But by night, she was the vengence. She was the night.

"Hey, Bob, is there something wrong about the Jewelry Club stealing from a jewelry store?"

Bob shrugged. "Who cares, Mark. It's not like 'Lady' Satsuki is going to know the difference."

"You're probably right, Bob. Heck, it's like like the Bats will show up."

...

"Uh, Bob?" Mark turned around, There was no Bob. Only darkness and gleaming white eyes. And then more darkness.

Batman looked down at the two thugs. One-Stars that resorted to use their powers to commit petty crimes. A pitiful sight, yet they seem to have risked stealing in plain sight for some reason.

Loud thundering claps echoed from the back of the store. A man was sitting on the glass counter on the back. His physique was huge and muscular, and he wore a wrestling mask. He seemed to have some sort of device strapped to his back and wrists. "So, you are Batman. These two claimed you were a demon, but I did want to see for myself. Of course, they thought I would protect them."

"Who are you?" Batman was wary of this one, especially when the man began to loosen the dials on his wrists. He grew in size and bulk.

"Let me tell you two things: I am Bane, and this is Venom."

Batman's eyes widened as she dodged a punch. It dug easily into the floor. "Venom? The drug that increases a person's physical strength many times over?"

"Yes, highly addictive too." Bane picked up the base of the counters and threw them at Batman, who had the sense to jump away. She threw some Batarangs, but they simply bounced off his skin.

"Why? You certainly seem strong enough not to need it."

"...Because I was weak." Bane admitted. "I failed in my duty, and so I must get stronger for her."

"...Ira Gamagoori."

Bane stepped on Mark and picked up Bob. "But now that you know my name, I cannot allow any of you to live."

Batman looked for any opening, hopefully one that started before their lives ended. To her surprise, something tried to strike Bane with a metal staff, but Bane turned around to strike the newcomer. Batman wasted no time throwing another Batarang, this time cutting one of the tubes behind his arm. The arm shrank, deflated, and it certainly inflated Bane's anger. Too bad the newcomer, which Batman saw wore a black and blue suit with a domino mask, decided to pry the other tube with her hands.

"No!" Bane tried to keep the Venom from leaking out, but Batman wasted no time rushing into punch Bane until he crashed into the glass counter. Batman could not imagine the big and proud Gamagoori reduced to a shriveled man.

After tying Bane and the two goons up, Batman retreated to the rooftops.

"So, Batman, ready to retire?" The black and blue figured had followed her.

"I believe it's past your bedtime, Ryuko."

"I...How did." Ryuko composed herself. "It's Nightwing. Why do you think I'm-"

"You didn't even bother to hide that red lock." Batman pointed at Nightwing's signature black hair and red lock. "Though the name is a good choice. I figured you would be a Robin."

Ryuko did not want to mention that was her initial choice. "Geez, you'd think with a school this big, you could appreciate the help."

Batman rounded at her. "Let me tell you two things: I work alone, and Honnouji is my city. I don't care if you're Superman. I. Don't. Need. Your. Help."

"And you're such an ass." Ryuko shook her head and looked back at Batman. Batman was already gone.