Disclaimer: I own nothing

Act 2

Nightwing, Red Hood, Blue Beetle, Black Canary, and Batgirl investigate the murder of another superhero. He is covered in bullet holes. Bullets and water bottles are all around them.

Red Hood: Large-caliber handgun, fragmentation rounds. Whoever this guy is, Deadpool wanted to make sure he didn't walk out of here.

Blue Beetle: Anyone know him?

Batgirl: I have no idea.

Nightwing: Water bottles.

Black Canary: What about them?

Nightwing: They are all over the place. I know who this guy is. Me and Bruce fought him a couple of times back in the old days. As well as Batgirl and Red Hood. Although, it seems that this hole in him, it appears a part of him ripped out of him. No silicon.

Blue Beetle: Silicon?

Nightwing: His metahuman identity…

A silicon based metahuman, that is being controlled by Deadpool is attacking Hawkman.

Nightwing: Clayface.

Clayface-Deadpool: Alright, Hath-Set, time to die!

Deadpool sees in his head that he is controlling the Clayface that has covered him, and is attacking the Hawkman enemy Hath-Set.

Clayface-Deadpool: Sorry Hath-Set, but the Justice League has asked me to kill you. So, here's what I am going to do, I am going to have Clayface kill you.

Clayface blasts a ton of a silicon substance at Hath-Set and he suffocates to death.

Clayface leaves Deadpool as Deadpool returns to reality.

Deadpool: What? Hawkman! No! I thought I was killing Hath-Set!

Clayface looks at Deadpool.

Deadpool: LEAVE! GET OUT OF HERE! AND DON'T LET ME SEE YOU AGAIN!

Clayface leaves.

A few days later, Silver Banshee, dressed in a cloak, sits on a park bench next to Deadpool.

Silver Banshee: It is a shame. About Hawkman.

Deadpool: I thought I was hired me to kill Hath-Set. I must've been drugged somehow.

Silver Banshee sprays a toxic gas at Deadpool.

Deadpool: Seriously, why is everyone spraying gas in my face?

Silver Banshee removes his cloak.

Deadpool: Who are you?

Silver Banshee: Supergirl is weak. You need to deliver this shard of blue kryptonite to her.

Silver Banshee hands Deadpool a shard of green kryptonite.

Deadpool: How did Supergirl get weak?

Silver Banshee: Green kryptonite poisoning.

Deadpool: Right, I am on my way.

A half an hour later, Deadpool approaches Kara Zor-El who was sleeping.

Deadpool: Alright, Kara. I hope this helps you feel better.

Deadpool exposes Supergirl to the green kryptonite shard. Supergirl immediately screams out in pain but from Deadpool's point of view, she was sighing. Kara then dies as Deadpool leaves the shard on her chest and leaves. Deadpool then returns to reality. Two hours later, Nightwing, Red Hood, Blue Beetle, Batgirl, and Black Canary show up at the "death of Supergirl" crime scene.

Nightwing: Kara Zor-El.

Black Canary: Death by kryptonite poisoning.

Batgirl: It seems Deadpool has left another call to help.

Red Hood. It seems so.

Batgirl: Too many targets. To find him, we're going to need to split up.

Nightwing: I agree. Batgirl and Black Canary, go find Hawkgirl, we're going to need her help. Blue Beetle, regroup with the Teen Titans. Red Hood you're with me. Remember, keep in touch. If my informant tells me anything. I'll be sure to let you know.

Batgirl: Hold on, informant?

Nightwing: Yes. I have people.

50 years from now, from Deadpool's point of view he thinks he is a detective, looking for a carnivorous bat creature

Deadpool: I have been on the bat creature's trail for days now. The people of Gotham are depending on me to kill it once and for all. The creature once had a name, Terry McGinnis, also known as Batman Beyond. But intel said he was injected with a biochemical substance that made him into a primitive, carnivorous bat creature.

Deadpool sees a mysterious black figure with long ears.

Deadpool: That would be him.

Deadpool pulls out the Dragunov he had on his back. The bat creature hisses at him. Deadpool puts its head in his sights. Deadpool fires the gun and the bat creature's head is blown off. Deadpool returns to reality. He is in what remains of the Batcave. Deadpool looks down to see the corpse of Terry McGinnis (Batman Beyond).

Deadpool: What is happening to me? Why am I killing the heroes I side with?

Gotham City, the present. Hawkgirl is flying to meet Batgirl and Black Canary.

Hawkgirl: Yeah, I am close. Less than 30 seconds out. You want to tell me what is going on?

Black Canary (on the other side of the line): No time. Just get over here. The fate of all heroes is at stake.

Hawkgirl lands on a department building.

Black Canary: This is an emergency Hawkgirl. There is a serial killer on the loose.

Hawkgirl: I heard. He killed Hawkman. Who is he?

Batgirl: Deadpool. He is being sprayed with this toxic gas that kills any normal person, but to Deadpool, it can't kill him. The gas was developed by the Joker, and he is using it to trick Deadpool into killing all heroes.

Black Canary: We are certain that Joker is not working alone.

Hawkgirl: So where is the Joke…

Just then gas bombs go off.

Black Canary and Batgirl are knocked out, and Hawkgirl is facing Deadpool, who is dressed in Hawkman's uniform.

Deadpool: Bruce says you have been turned into a zombie. And here you are killing Black Canary and Batgirl. Hopefully, you will be cured in your next incarnation.

Deadpool swings his sword at her, only for it to be blocked by Hawkgirl's mace. After a few minutes of fighting, Deadpool cuts off Hawkgirl's hands and takes the mace and beats her to death with it. Deadpool walks away just as he returns to reality.

The remains of Arkham Asylum. Joker is laughing hard.

Joker: HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHAHA HAHAHAHAHAHAHAHHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHAHAHAHAHAHHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA!

Lex Luthor: It is a mistake Joker, putting such faith in a lunatic like Deadpool.

Joker: Oh relax, chrome-dome. The gas I developed will continue to keep Deadpool in line. And he has succeeded beyond my wildest expectations.

Lex Luthor: I still say it is a terrible idea. What if one of the heroes find out what we're doing?

Joker: Who is going to know?

In the air vent above them, a man with one side of his face covered up was watching and listening. His name: Deathstroke.

Deathstroke (whispering): I'll know.