Homestar Runner no doubt intended to capture this intentionally with Marshie. The Homestar Runner Wiki describes Marshie as "the genuinely alarming mascot for Fluffy Puff Marshmallows", and several cartoons have featured fake commercials starring Marshie that are downright creepy, featuring "non-sequitur rantings, disturbing close-ups, inappropriate sound effects, faintly desperate pleas and even a behind-the-scenes nervous breakdown". Strong Bad put it best: "I really think those Marshie commercials ought to be rated NC-17" (Needlessly Creepy Times 17).
Then there's Gel-arshie, the mascot for a gelatin dessert made by the Fluffy-Puff company. Gel-arshie is a translucent, bright red version of Marshie, with a floating visible brain in his center.
Gel-arshie: I'M AN ABOMINATION! And I'm coming to your house after school...
Then, there's episode 5 of Strong Bad's Cool Game for Attractive People, in which Gel-arshie is part of Strong Bad's party. Creepy Mascot + More screen time = New levels of Nightmare Fuel. Even worse, he's REQUIRED in order to beat the final boss.
Gel-arshie: Hey kids! I'm Gel-Arshie and I'm in your house! You tired old snacks can-AHH! WHAT HAVE YOU DONE TO MY LEGS?!
You summon him by rigging the villain to shoot point-giving fruit instead of ammo. This results in a Kill Screen that brings Gel-arshie into the real world. It even parodies The Ring when he jerks forward, causing Strong Bad to scream and fall back.
And really, who can forget his other Jump Scare moments? Such as when he's used to turn a pool into gelatin and Strong Bad sings the commercial jingle, only for-
Gel-arshie: DON'T SING MY SONG!
Strong Bad: *screams*
Marshie's counterpart in the "Old-Timey" Alternate Universe, Mr. Shmallow, is slightly less distressing ("Look lively. Look lively!"). At the end of the "Fluffy-Puff Air-Puffed Sugar Delights" commercial, Homestar comments, "That monster's gonna give me nightmares."
Since Homestar Runner has such a basis in the creators' childhood, it's not surprising that some within-series examples of this would crop up. A young Strong Sad was apparently terrified of his neighbor, Senor Cardgage ("He was extremely sketchy and gave me nightmares!"), and Strong Bad gets "the jibblies" at the sight of That Horrible Painting That's Been in Strong Mad's Closet Ever Since We Were Little ("Come on in heeeeeeeere....."), as well as The Little Chef Guy. Homsar himself is a rather unnerving character, seeing as he is a mutated, stunted in-universe parody of Homestar Runner. Though really, Homsar's meant to be that. He was made by a misspelling of "Homestar" in Sbemail #2, so it'd make perfect sense that he'd be weird.
Speaking of That Horrible Painting, the 2007 Halloween episode, "Jibblies 2" certainly did it for many viewers. The premise is genuinely creepy, what with everyone being hypnotized by the painting, Strong Bad wildly convulsing and bouncing all over the room and up against the ceiling, and finally Homestar entering the Horrible Painting itself - though the fact that the demon finally has a friend and will no longer be evil (and Homestar's adorable Artie The Strongest Man In The World costume) softens the blow a bit. The Brothers Chaps even included a disclaimer stating the episode might be too much for younger fans.
Though easter eggs literally save it, especially Homsar's.
The Drive-Thru Whale is a surreal drive-thru speaker known for showing up out of nowhere and spouting crackly non-sequiturs, usually revolving around self-mutilation ("Sever your leg, please. It's the greatest day."), with the implication that it actually eatsanyone who actually complies with its requests. If it weren't funny as hell, it would be terrifying.
The first episode of Strong Bad's Cool Game for Attractive People, "Homestar Ruiner", not only features the Drive-Thru Whale but gives it more dialogue than all of its previous appearances combined, mixing the Whale's typical hilarious nonsense ("Would you like monkeys with that?") with a dash of Paranoia Fuel ("Please smile for the Blubb-o's satellite camera!") and at least one insinuation of fiery destruction ("When the End Times come, we will all dance the Conga of the Apocalypse!").
Well, more like Foreshadowing, when you get to the "end times" of the game and you have to kick everyone out by inciting a conga line.
And in the Strong Bad Email "licensed", Papa Cardgage's Puddin' Patch and the Strong Bad jelly pop.
The fact that Senor Cardgage sings both call and response to his song is somehow immensely comforting, as it suggests that he is alone in the building. Or maybe that's his Madness Mantra...Yikes!
The email ends when Homestar turns up with shards of glass embedded in his bleeding face.
Of course, that mess was still his best birthday ever. So either everything else was f**king awesome, or Homestar has some seriously crappy birthdays.
Trudgemank is saved from being absolute Nightmare Fuel only by the timely intervention of Peacey P.
Also, Main Page #25 not only features another appearance by Marshie, but also features a somewhat disturbing appearance by a seriously off Homestar Runner puppet. There is something strangely frightening about the ensuing exchange, especially how Not Homestar's mouth doesn't move:
Not Homestar: "The store."
Homestar: "Who are you?"
Not Homestar: "Well, I am the exact same."
Shark-tooth Bubs has an equally unnerving quality to him.
The Strong Bad E-mail "disconnected" features the not-quite regenerated versions of "Head Bad" and "Strong Body". "Euw! Go away, Head-Nub and Nub-Head!"
The Powered by the Cheat music video "Crystal Fortress" features some darn creepy imagery (The unicorn horns sprouting out of stuff— Squick...).
In Punkin Show, there was the Homestar pumpkin. Not quite high octane, but Homestar did mention that it may be unsuitable to children.
The end of "being mean" features Strong Bad's drawing of a nasty-looking shark. While the design can be a bit cheap in appearance, it expresses a desire to eat the sender's kids.
Doomy Tales of the Macabre, while mostly a Black Comedy, did cross the line a few times. Strong Mad eating The Cheat, the King of Town drowning to death (though he enjoyed it), Pom Pom exploding, Bubs' severed head, ONION BUBS TALKING, Homestar gaining too many knees and, of course, the Uncanny Valleyhuman hands. Strong Sad's costume and the Nothing Is Scarier intro did not help.
It's kind of nullified by (a) the awesome costumes (STRONGBADASSKULLKIDOMG) and (b) everyone's various reactions to their deaths, some of which are hilarious.
Nullified a bit when Strong Bad cuts in to say that's actually how they bathe The Cheat.
Strong Bad: That's not macab-er! Strong Mad eats the Cheat like, four times a day! How do you think we give him baths?
His expression helped *add to the shock value* a lot.
And then, to compensate for their lack of a Halloween toon that year, The Brothers Chaps released a cartoon where all of the main characters appeared, "got their weens mixed up" and dressed up in Christmas-related costumes. All except Homsar.
Nullified by the fact that one was JUST the costumes part. The costumes come at the end of every Halloween toon, and Homsar usually only appeared if you activate his easter egg during the toon. Since there is no toon, there is no easter egg, meaning no Homsar.
In "Bug in Mouth Disease", Homestar goes to see Bubs about his swallowed bug problem. Before he arrives, there's a shot of Bubs burning a manilla envelope labeled "Exhibit A", which he quickly hides when Homestar shows up. After "examining" him, Bubs tells Homestar that he has no pancreas, but "luckily", he happens to have a fresh one on him- inside a cooler labeled "Exhibit B". It's not hard to figure out what's going on here: Bubs is involved in organ trafficking.
Well he did seem excited to go to Transylvania after hearing from Strong Bad that they eat puppies for breakfast there.
And according to one Halloween special, he's capable of eating holidays. He's a borderline Eldritch Abomination!
An Easter egg in "Hremail2000" shows Strong Bad walking around in what looks like Strong Sad's feet which have torn edges and make a squishy sound as he walks in them. What's more, he refers to them as "foot pelts", thus giving the impression that he's wearing Strong Sad's actual feet. Negative Continuity saves it in the end.
Near the end of "Homestaraloween(sic?) Party" Strong Sad just flickers the flashlight on and off, continuously, until the end of the toon, all while spooky music is playing. It's just...creepy...
There's a DVD Game on Everything Else, Volume 2 that's HONF. You play as Blue Laser, and both the wrong choices kill you. One zaps him to death and you see his skeleton, the other slices him in half and you can see his insides.
Regarding the Easter egg on imaginary: trying to imagine what Pumpy Clumpy looks like.
From that same sbemail, Coach Z shows us his imaginary friend, "Real Life Mister Blancaster Next Door." He's the most humanoid of the imaginary friends, and all he does is shiver and moan. It's really kind of unnerving, and reeks of Fridge Horror.
Mancuso's Older Brother from the first 2008 Halloween toon could count; the fact that he has a less-cartoony design than the regulars probably doesn't help matters.
At the end of the "Grumblecakes" music video, Strong Bad makes a rather unnerving grin that just has to be a Slasher Smile.
In the remake of "Where My Hat is at?", there's a scene where Homestar finds Strong Sad in a pool, and it seems that he was being drowned mafia-style by Strong Bad and The Cheat. Never mind the highly disturbing punishment, which is far more cruel than anything else Strong Bad has ever done to his little brother, but his eyes are also sunken in and bloodshot from being submerged so long. Yikes!
In the normally cheery world of Homestar Runner, it's incredibly unnerving when the series suddenly and abruptly switches tone. Such an occurrence happens in one of the Easter eggs available at the end of the Sbemail "rough copy". Homestar is shown sitting alone in a darkened room, apparently despondent. Nothing but the wind is heard for quite a while. Homestar eventually sighs and wearily mutters "DNA evidence..." This is part of a series of teasers for a later (and thankfully humorous) cartoon. To a lesser extent, Strong Sad's blog and even "The Secrets That I Keep" have a similar effect.
This is one of the things accessed from Strong Sad's aforementioned blog.
Sickly Sam's Big Outing has a scene after the flower scene where the film "glitches" up. It then cuts to an alternative ending whereas they put The Homestar Runner and Old-Timey Marizpan in the glue factory as well. It's out of nowhere, and thank goodness it's not the real ending.