"I cant believe they put me in the Riddler's old cell." I said, looking at all the question marks on the cells. 'Still, I do find it strange that all of Blackgate's inmates were moved here.' I thought, looking across the cell, seeing a group of Joker's goons. 'The Joker has something planed, I just know it.' I thought, narrowing my eyes.

Watching as the Joker was dragged by the guards, he tripped on his own leg. "Get up! Now!" The guard said, still holding him by one arm. Seeing the Joker headbutt him in the nose, I knew that he was out of it.

Standing up, I made my way to the cells entrance, the new electric gate. Seeing him wrap his cuffs around the mans neck, I watched as the doctor started to panic. "Hurry! We're losing him, Doc!" Joker yelled while laughing, with the doctor helping him get free.

Once free, he tossed the man down and kicked the doctor away, where he then pounced on the guard. He whispered something to him, where he jumped up and started dancing around, ending with him pointing at the gate to the other size that he came from. Seeing it get shut down, Joker ran through while Batman broke the glass and landed in the room that the Joker was at.

"Welcome to the madhouse, Batman! I set a trap, and you sprang it gloriously!" Joker said with his arms wide open, knowing that the Batman couldn't reach him. "Now lets get this party started." Joker said as my cell was shut off, with me shacking my head as I stepped forward, looking at the Batman. "Ladies and maniacs, I apologize for this interruption to your regular entertainment." Joker said, with Batman beating the crap out of the three inmates that were in the room, with me leaning against the wall watching as it went down. "Up until a few seconds ago, I was going to kill everyone in the room and then watch cartoons, but then... well... you know how I do love a captive audience." Joker said, with me rolling my eyes as Batman had finished all three of them.

"You're not going to fight?" Batman questioned, with me shacking my head at him.

"Naw, but I will help get this prison back under control." I said, with him staring me down. "I know you don't trust me, but because this is my home, I will fight for it." I said, narrowing my eyes at him.

"No killing, no matter how much you want to." He said, with me nodding as the other gates opened up.

"I will go after the Joker, I've already found a way around the gates." I said, with him starting the fight while I made my way to the gate, looking up at the camera. "Oh, Harley, mind letting an old friend through? It as been a year since we've seen the other." I said, with the gate going down, with me seeing Joke running away. "Thanks." I said, walking through while the gates turned back on, preventing the Batman from getting through. "I'll help the guards, you can chase the Joker." I said, looking back at him as he fought.

As I walked down the hall, I saw a dead guard, with me kneeling next to him and taking his key card. Taking his gear, I put it on so that I could move freely without trouble. I left his helmet beside him, with me placing a hand on his head, paying my respects. Standing up and looking down the next hall, seeing more dead guards, I ran down the hall.

As I ran, two goons ran at me from behind cover, with me breaking one of their arms and tossing them into the other. Standing over him, I kicked his knees in, breaking his legs. He didn't get the chance to scream long as I kicked his face, knocking him out.

Going down the left path, I saw one of the guards was still alive. Walking up to the door, it opened for me, with me walking through. Once through, it locked behind me, with me looking at it, then continuing to the decontamination room. Once I reached it, I saw the guards fighting against the goons. 'I'll get caught in the cross fire if I rush in, I better find another way.' I thought, looking up. Jumping up, I grabbed the edge and threw myself up, where I climbed up the shaft. Entering the vent to the right, I made my way inside the room.

Jumping onto the platform, I saw them placing green containers down. Knowing that it was bad, I jumped over to the next platform and grabbed the edge, pulling myself up. Seeing them start to clear out after reaching the end, I grabbed one of them by the back of their shirts and held them up, with me cuffing him to the platform. Jumping down, I looked at the guards. "GET OUT OF HERE, LAUGHING GAS!?" I yelled, running out myself as the containers released the gas.

Walking down the hall, I saw a green Joker painting with arrows on the ground. Walking up to them, I slid my finger across it, seeing that it was fresh. Looking down the way that it lead, I knew that it lead over to my old cell blocks. There wasn't anything there other than a hiding spot for him. Looking the other way, I got up and continued on to help the guards escape.

I made my way to the elevators, with one dropping for not only me but some guards as well. Walking in with the guards, they looked at me and took aim. "Hands up!" One of them yelled, with me keeping my arms crossed.

"I'm here to escort you all out of Arkham, as the Joker plans on setting off explosives around the city." I said, with them looking at the other then at me. "Orders of the Bat." I said, with them relaxing. Once the doors opened, they were gunned down, with me ducking from the gunfire as I didn't expect it. Once it stopped, I looked up at Harley Quinn in a nurses outfit, who winked at me then hit me in the head with her bat, with everything going dark.