"Don't worry, I'm sure you'll be fine. But eventually, everyone runs out of time."
The Kickstarter videos. First, there's the entire premise of the puppets being kidnapped and held hostage, which several people have criticized for crossing a line into legitimately traumatic territory. Then, in "HELP #2", there's Yellow Guy having a bag put on his head and yelling, "No, I don't want it!" It's very unsettling, especially since Yellow Guy is crying while he's talking.
There's also a split-second shot of Sketchbook's face on the floor. Just their face, not the rest of them. They could be dead... or alternatively, they could be still alive, but faceless.
Look closely at the room. They may have been nailed to the wall.
"HELP #3" has the Money Man gathering a collection of body parts (which may or may not come from our heroes) into a bag and writing 'YOU' on the bag with what's probably the puppets' blood. All while distorted cheery music plays in the background.
Episode 3, "Love", starts with an animated Butterfly getting crushed by Duck Guy (It landed on their Chicken), complete with realistic Butterfly Corpse and blood (Also on their Chicken). Also, Yellow Guy is forced to marry his 'special one' against his will. Extra points goes to the strange maggot-like creature that pops out of the egg at the end of the video, which is also smashed by Duck Guy.
Said strange maggot like creature? If you look carefully, it's a caterpillar, with the same colouring and hair as the Yellow Guy. Consider that the last moment of the "dream sequence" was Shrignold flying with a ring towards him and, well...
The aftermath of the raw chicken and bloody egg picnic, Duck Guy reminding everyone that they've finished it, and then staring intently into the camera for an uncomfortably long time. It's just so...off.
WARNING: Do not eat before or after this episode. The hatched caterpillar and bloody raw chicken are pure Nausea Fuel.
Episode 4 has the characters in the digital world. The longer they stay in there, the more grotesque their avatars become, until they just cease to exist in the real world except as terrifying holograms. The best example of this is Duck Guy, who slowly gets more realistic textures and a human-like model that just screeches.
"DON'T TOUCH MEEEEEEEEEEE!!!"
It also makes this face◊ while screeching at Red Guy with...something dripping from his eyes and mouth. Not to mention his hands (usually mouse cursors) are now sinewy fingers of red wiring.
At one point, the computer brags he can tell you the time, and Duck Guy immediately looks at the camera and says "Time?!" in a very surprised voice. It sounds like he's remembering the trauma of what happened to them in Episode 2.
The clones are really, really scary. At one occasion, one of the clones JUMPSCARES AT YOU. It's especially bad when It gets faster. At the faster points, every thing becomes dark and scary, and Colin turns into a floating head.
Episode 5 features such delightful scenes as a giant giggling yellow thing eating Duck Guy's organs, and Yellow Guy being force-fed organs until he's obese. Both characters are completely unaware of this and helpless to stop it.
The Yellow thing eating Duck Guy's Organs? It's a can! That's why duck guy's bits were in cans, and why his face was on them!
Poor, poor Duck Guy. By the end, he's reduced to nothing more than a bowl of blood, flesh, and feathers, with only his decaying beak still intact.
The duck is starting to realize that something is very wrong. Both the duck and the yellow guy realize that something is missing, and that something is the red guy.
Episode 5 seems to veer into Surreal Horror, with Duck Guy disappearing halfway all while Yellow Guy is tormented by the insane Health Band. Brr, reaching David Lynch levels of nightmare fuel.
Duck Guy seems well and truly terrified the entire video, never once feeling at ease or joining in unlike with Sketchbook, Tony and Colin. Just before he gets his organs eaten, he seems so desperate to escape...
In the beginning, Duck Guy and Yellow Guy try to realize what's missing. They look at a drawing of the original trio sitting in the living room, but when they look again, Red Guy has left and is visible in the window. Also in the same drawing, Duck Guy has "X"s for eyes and Yellow Guy appears to have a Slasher Smile.
Now there's only one puppet left. And it's guaranteed that something horrible is going to happen to him next time...
It's a bit hard to tell because it moves very fast, but when Duck Guy pushes the camera down, it looks like the red thing that blurs across the screen isn't the steak, it's Red Guy.