A bit shorter then the last, but I hope you enjoy it regardless!

In the streets of Gotham, many villains and henchmen were running about, Black Mask and his goons had taken over Monarch Theater, they were forcing civilians, young and old into the theater. Strapping explosive vests with Joker's insignia on them.

BM Goon 1: Hey, Boss, why are gathering people for the Joker?

Black Mask: Hell if I know, but Joker is paying good money to have hostages to keep the other superheroes out of the city. And I'm not one to turn down a payday. Now keep moving!

As Black Mask and his goons forced the last of the hostages, something... Green and slimy were watching from the raptors of the theater. Silently, there was a device getting the signal from the Bat-Computer, a message "Welcome to the family, Oozee". The slimy creature named Oozee slithered away into the dark as Black Mask had all the hostages gathered on stage.

Black Mask: Alright! No one makes any funny moves! Those vests you got on are made so that if any one walks out of here for some fresh air... BOOM!!! You'll be blown to pieces in a cloud of Joker Gas! So stay put and no one blows up!

BM Goon 2: So we just stay here and get paid to do nothing? Sweet!

Black Mask: Precisely, just keep the peace. And don't touch the vests, once they're armed, trying to get them off will blow you up too! So keep your hands off 'em!

The hostages were all terrified, but none moved, not wanting to trigger the Joker Vests, but a young boy ran off into the backstage, one of the goons spotted him.

BM Goon 3: Black Mask! There's a hostage running-

Black Mask: So? What about it?

BM Goon 2: But sir-

Black Mask: Didn't you hear me about those vests? If that kid so much as takes a step outside the theater, he's dead! Not to mention, he'll cover any exit he tries to use in Joker Gas! We don't need to keep all of them, just enough that no superheroes outside of Gotham dare to try and come here!

In the backstage of the theater, the boy was running away with tears in his eyes, he saw an old door way, but the moment he touched the door, the vest began beeping loudly, the boy froze in fear. He then backed away from the door before stumbling and falling down. He curled up and began sobbing into his knees, hiding himself into a corner as no one came for him, he was just alone in the dark.

Suddenly, a noise startled the boy, looked up with teary eyes, ready to run, but what he saw made the tears stop, the silhouette of Batman standing in the darkness. The boy wanted to say something but a card that read, "Shush." was slid over to him. The boy covered his mouth as another card that read, "Come here" was slid over to him.

The boy slowly made his way over to the figure, 'Batman' poked out one more card, "Close your eyes." The boy did as 'Batman' told him and shut his eyes, where he heard a sizzling sound before opening his eyes and finding the Joker vest was gone now. The boy smiled and cried tears of joy, 'Batman' gave him a GCPD card and pointed to the back door. The boy silently thanked 'Batman' and ran out the back door to go to police.

When the boy left, the 'Batman' silhouette began to morph and change, revealing just to be a batman cowl on a mannequin that seemed to move on its own, before turning green and starting to melt into slime. Then that slime reformed into a green gelatinous humanoid creature with deep blue eyes with green pupils, its figure was vaguely feminine as it was similar to a slim curvy build, and it's head lacked a mouth, nose, or eats. It was Oozee. As Oozee looked around before latching its full body to a pillar and slithering its slime falling in reverse. As it slithered undetected, the Bat-Computer began a recording about this creature from its Extended Family Files.

Batman: (Narrating) I'm not sure of the name or age of this one, or even if it has one or counts the days it's been alive. This gelatinous creature is a colony of millions of sentient cells all commanded by one nucleus that acts as its brain and heart. It lacks any form of speech, the nucleus is female so I simply use She/Her pronouns, she seems to like it, and communicates through noises. I know nothing of her origin due to this communication barrier. Lastly, it responds happily to the alias, Oozee (Ooze-e), so that is what I've come to call it.

Oozee slithered along the raptors, silently watching Black Mask and his goons wait around.

Batman: (narrating) From what I've gathered about Oozee's species from the Green Lantern Corps Guardians, a species thought to be extinct known as Fludemites, a race of polymorphic aliens whose diet solely consists of inorganic matter. They were generally peaceful, as the excrement they left behind would often result in the planet they resided on to become fertile no matter how barren it was. However, one day on a planet turned on these creatures and they've all gone. Their unique physiology allows them to move through tight spaces, dissolve almost anything with her acidic physiology, and regenerate at an astonishing rate. A true asset to our cause, if a bit... unorthodox.

Oozee rolled over a dead rate in a mouse trap, leaving the rat while dissolving the trap into its goo-like body.

Batman: (narrating) Any material in any state, so long as it's non-organic. I've done extensive testing and found that so long as the item isn't organic like plants or meat, Oozee will consume it. I've used depleted uranium, nuclear waste, and even a meteor fragment once. All gone without a trace, except for a little slime. While Oozee prefers solid items, through exposure to Joker Gas and Scarecrow's Fear Toxin, I've found that Oozee can even absorb and consume deadly poisons and gases.

Oozee slithered up to a power box before extending a tendril and switching off the lights.

Batman: (narrating) I've found that Oozee is also capable of replicating any solid material she's absorbed, making her incredibly versatile in combat situations. And she has a particular fondness for the color purple, the dye probably tastes good to her, until the Extended Family signal has been activated, she is to wait in Gotham's Monarch Theater for now. End of Log.

As Black Mask and his goon, stumbled around in the dark, Black Mask turned on a flashlight, checking his surroundings.

Black Mask: What the hell happened to the lights?!

BM Goon 1: Did a blackout happen?

One of the goons looks out a window, seeing that only their building was out of power.

BM Goon 2: Nah, all the other places have power. So what gives?

Oozee falls onto the silent as the narration stops, landing with a thud, altering the criminals before changing her form again.

Black Mask: The hell was that?!

Black Mask shined his light toward the source of the noise, only to see the back of Batman, or rather, Oozee mimicking Batman's cape and cowl, the one source of light shining on he back making her look like a shadowy silhouette of the Dark Knight.

Black Mask: IT'S THE BAT!!!

Oozee copies Batman's armor for his arms and smashes the only flashlight, leaving her to be free to change form at will. Bullets from all the criminals shot off but none hit anything other then Oozee, her body absorbing the lead bullets and dissolving the metal into slime, leaving no trace of damage. The darkness hiding all of this from the criminal's view, Oozee then began

Black Mask: Where is the Bat?!

BM Goon 2: He's got my gun!

BM Goon 3: Mine too!

BM Goon 1: I can't see a thing, boss!

Black Mask: Spread out, find that son of a bitch!

In the darkness, Oozee took advantage of the confusion. Her slimy body morphed into a whip-like appendage, snatching the weapons from the goons' hands before they could react. Oozee's body dissolved the weapons into it and Oozee copied the metal the guns were made from to create morning stars that she swung around with surprising speed and accuracy, knocking the goons out cold without killing them. Black Mask hit the deck as he heard his men falling on after the other.

Black Mask: Your dead Bat-

Black Mask was then interrupted by Oozee forming a large slab of brinks from her appendage before slamming it down on Black Mask, pinning him to the ground. He grunted as he felt his ribs crack under the pressure, before he swiftly fell into unconsciousness. Oozee then began to absorb the explosive vests from the hostages, one by one, the beeping ceasing as each vest was safely neutralized and absorbed within her. The hostages breathed a sigh of relief as they no longer heard the beeping of the Joker Vests. Oozee left a GCPD card on the theater stage with the hostages before she slithered up into the raptors, switching back on the power.

The lights flickered back on, revealing the unconscious goons and a Black Mask groaning in pain. The hostages looked around in disbelief at the sudden turn of events. The theater, once filled with fear and chaos, was now eerily quiet. They saw the GCPD card and immediately knew what to do. The young boy who had escaped earlier had returned with reinforcements, Batman had sent them. They rushed to the stage, calling out their thanks to the hero they knew was hidden somewhere in the shadows.

Oozee made bubbling noises indicating happiness, even though she knew their thanks weren't toward her directly. She had done what she was told by Batman, Oozee then slithered up to the device sending her the signal for Batman's 'Extended Family' plan, and saw the coordinates. She slithered up to a vent shaft, which lead into a different abandoned building, and a window, but instead of going through the vent, Oozee slithered through the window. Ignoring the obvious safe and stealthy passage the vent would grant, almost purposefully opting toward anything other then an enclosed space.

Once outside, Oozee took in the night air and let out a sigh, a bubble of slime popped off her gelatinous form, as if she were exhaling after being in a tight spot too long. She began to move towards the location on the device, an abandoned building in Old Gotham.

To Be Continued...

Thanks for reading.

[Batman Extended Family Files: Oozee]

[Age: ??]

[Species: Fludemite]

[First Meeting: Within the docks of Gotham Harbor.]

[Alien Planet: Nomadic]

[Abilities: Shape-shifting, Elasticity, Body Control, Regeneration, Acidic Physiology, Adhesive Physiology, Chemistry Manipulation, Solid/Gas/Liquid Matter Ingestion]

Bye For Now!