Complete Monster: The Joker, starting with his Moral Event Horizon. After finding out Harley was secretly helping the Green Goblin, the Joker shoots her. Later, after tricking the heroes into thinking The Punisher shot him, the Joker leads Harley away as they try to escape. The Joker assures Harley he wasn't going to leave her there to die...and then hits her to the ground, saying this is a much better spot. When he comes back from the dead in Rorsarch and Deadpool 2, he kills a mook who sold him out in a very painful and thankfully offscreen manner, then shoots Rorsarch.
The local version of the Green Goblin is just hilarious to watch.
Ever since his introduction, Deadpool has become just as popular, maybe even moreso.
Lars M. Dusseldorf is probably a truer version of this trope, as since their popularity became apparent Deadpool and Gobby have been pushed increasingly to the fore, whereas we can be assured that Lars is not going to take centre stage. But he is very, very awesome.
In the Rorscach & Deadpool Buddy Cop parody, the pair are on the trail of a mysterious crime figure named Joe Palachi, who turns out to be The Joker, and more specifically the humorless 80's one from Frank Miller's Batman: The Dark Knight Returns. There are about three layers of brilliance to this, one of which Joe himself admitted to being the reason he picked it:
Firstly, Palachi, whilst being a sort-of common Italian surname, is also a reference to the opera Pagliacci, and the lead character of the same name (it is sometimes called Palachi's Opera). That was a subtle clue as to Joe Palachi's true identity.
Secondly, this is a Watchmen reference and specifically a Rorschach reference, since in the comic Rorschach tells someone about a joke he heard about Pagliacci.
And third, the joke is about how the great clown Pagliacci is utterly depressed and miserable because he has come to view the planet as a Crapsack World, which perfectly reflects the fact that The Joker pretending to be Joe Palachi is the most serious, unfunny Joker ever put to print- turned Up to Eleven when it turns out Darkseid has brainwashed him with the Anti-Life Equation which makes him really believe this:
"Man goes to doctor. Says he's depressed. Says life is harsh and cruel. Says he feels all alone in a threatening world. Doctor says, "Treatment is simple. The great clown Pagliacci is in town tonight. Go see him. That should pick you up." Man bursts into tears. Says, "But doctor... I am Pagliacci.""
Another example is just in the pairing of those two Deadpool is a walking Satire/Parody of comic books antiheroes/anti-villains , whilst Rorschach is a Deconstruction of the Anti-Hero/Anti-villains.
"Funny Aneurysm" Moment: After Spider-Man wakes up from a dream in which his incarnations from both of his movie franchises feud, he tells Batman that The Amazing Spider-Man might outgross The Dark Knight Rises. Even though Spidey's movie made enough money for the studio to greenlight a sequel, it still made about $200 million less than Dark Knight Rises.
Genius Bonus: Deadpool's Trade Snark during the "Rorschach and Deadpool" song (Copy and I'll suuuuuuuue) is made all the funnier when you realise that the backing track (And the melody based off said backing track) is based around "West Precinct Medium", a piece of royalty-free music from Apple's iLife bundle included with most Apple products, which under most circumstances are perfectly legal to use in videos one is making money off of.
So the trailer for the 2011 DC Universe Online premiered and in it a future Lex Luthor traveled back in time to warn the heroes that the world would be destroyed if they didn't stop him. Sound familiar? Hilariously enough, RandomGuy lampshaded this in a recent BlogTV chat:
"Green Lantern vs. The Critics" ended with Deadpool going through the Reynolds-ing as he now has Ryan Reynolds to himself. This becomes much funnier now that Ryan Reynolds has been cast as Conner MacLeod for the upcoming reboot.
"Ways To Screw Up The Avengers Movie" had a running gag of butchering the phrase, "Avengers, assemble!" It would later become revealed that the movie actually threw out the phrase altogether. Said gag ends with Cap saying "Avengers Assemble... a Human Centipede!" Come Agents of S.H.I.E.L.D., "Centipede" is now the name for what can give regular humans superpowers.
Another part of this video was Nick Fury saying In Ways to Screw Up the Avengers Movie "I'm here to talk to you about the Avenger Initative...Howard." And now he's appeared in the after credit scene of Guardians of the Galaxy
Back in April of 2008, Happy Hour 1 was released, in which Logan was gloating about how he had an award-winning director, and thus was going to have a great movie. Hulk proceeded to point out this was no guarantee. X-Men Origins: Wolverine came out a year later, and it is remembered for being one of the worst superhero movies to date.
In a video where Adam West's Batman and Howard the Duck face off, Batman makes a comment about Marvel Studios preferring talking raccoons to talking ducks. In Guardians of the Galaxy the studio has it both ways
During Hal Jordan and Magneto's debate, Hal states that "[Green Lantern] is the first of a trilogy while [X-Men First Class] is running on the fumes of a fifth." Guess which film ended up starting a trilogy?
In the very first episode—March 2007—Superman said DC "asked a few writers to think about the possibility of maybe what it might take to theoretically make a Justice Jeague movie in the next ten years or possibly more perhaps." The tentative release date for the Justice League movie is October 2017, ten years later.
Ho Yay: Mostly on Deadpool's part towards Ryan Reynolds, and Rorschach. In the latter's case, Deadpool shoots an old man to steal his fedora (and hug it) because it reminds him of Rorshach.
I Knew It: For the people who guessed that season three would be called "Zero Hour."
From their BlogTV shows - Blaming Soundwave for any Technical Difficulties.
Moral Event Horizon: The Joker, naturally, crosses this in the final episode of "Happy Hour". After finding out Harley was secretly helping the Green Goblin, the Joker shoots her. Later, after tricking the heroes into thinking The Punisher killed him, the Joker leads Harley away as they try to escape. The Joker assures Harley he wasn't going to leave her there to die...and then tosses her aside, saying this is a much better spot.
Selfish Good: Depending on the tone of the vid Iron Man was in. As he puts it, people kind of expect him to be a media whore.
Shallow Parody: The movie trailer parodies sometimes fall into this, usually by copying the trailer and adding jokes based on which character replaced whom.