[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/jennyexoskin.jpg]]
[[caption-width-right:350: [[LivingClothes The clothes just want to wear you...]]]]
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Not all is cutesy in [[WesternAnimation/MyLifeAsATeenageRobot this life]]...
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* At the beginning of the first episode, Tuck walks into [[spoiler: Jenny's house]] to [[ItMakesSenseInContext retrieve the baseball]]. Much of the house looks dilapidated, with what looks like the remains of a robot [[SymbolicBlood leaking oil]]. [[BigLippedAlligatorMoment This is never brought up]] [[FridgeHorror again.]]
* When Tuck envisions the Planet of the Bikers, there's a sudden art shift in the character design, giving it a more-than-creepy look. The fact that the evil bikers' designs are based on the work of Music/RobZombie doesn't help much, either.
** Although Tammy doesn't have an scary appearance initially, her monstrous mouth and tongue (a ShoutOut to ''Franchise/{{Alien}}'') can catch people off guard in "Ball in Chain". Also, there is the concept of being a slave in marriage; trying to get out of it involves the groom being eaten by the bride. It is said to be the tradition on the Space Bikers' planet.
* Gigawatt is certainly unsettling...mostly because he's one of the few villains that could effortlessly [[CurbstompBattle curbstomp Jenny time and time again.]]
* When Vexus has her VillainousBreakdown. Both that and her obsession with Jenny and her various disguises and {{Evil Plan}}s.
* The Exo-Skin. It was designed by Nora Wakeman to allow Jenny to pass as a normal human girl, but turns out to be a G-rated version of [[SpiderMan Venom]].
** The way the Exo-Skin ''slithers'' up to Jenny like a snake in the middle of the night -- and its appearance in the moonlight -- still gives many fans the shivers. (So much that the scene became the header image for this page.)
** When Jenny first tries out the new skin, it latches itself onto her body and slowly crawls over her face. She tries to tell Nora Wakeman that there's something wrong, but Wakeman ignores her as she crawls back into the shadows, struggling and crying out.
** Worse, unlike most of the show's villains, the Exo-Skin ''isn't defeated'': at the end of the episode, after the skin has supposedly been "deactivated" by Jenny pouring milkshake on herself, Brad's cranky, grumpy old boss at the diner gets attacked; after his customers desert him, he begs for them to come back, insisting that he's seen the error in his ways...just as the skin's sensors latch onto him. The exo-skin [[SickeningCrunch CHOMPS]] down on him, [[EvilLaugh laughing menacingly]], as the screen [[FadeToBlack goes black]].
*** Even worse? The Exo-Skin is never seen or heard from again after that episode; as far as the viewers know, it's still out there. NothingIsScarier, indeed.
* This bit from "The Wonderful World of Wizzly":
-->'''Jenny:''' Go on, little robots! Be free!
-->'''Robot Raccoon:''' But where are we supposed to go?
-->''(Jenny twists her head 180 degrees revealing a big, blanked-eyed DeathGlare)''
-->'''Jenny:''' ''(monotone)'' I said...'''be free.'''
* "Armagedroid". The first fight against him and seeing him ''tear Jenny apart''. Plus the fact that, [[NeverSayDie although not explicitly stated]], it appears that he came dangerously close to '''killing''' her. [[spoiler:There's also the fact that he was built by Wakeman, essentially making him Jenny's ''brother''.]]
** In a similar sense, "Enclosure of Doom". Just the fact that Jenny managed to talk [[spoiler:Armagedroid into ''[[DrivenToSuicide destroying himself]]'']].
*** How it's done it also unnerving: first you have [[spoiler:him ''tearing into himself'', basically causing a robotic disembowelment, and ripping out as much of his insides as possible]], and then you have [[spoiler:him activating his self-destruct]].
*** It's worth pointing out that [[spoiler:[[NoEndorHolocaust he was still in town when he did this]]]].
* Lil'Acorn. Everything about him, from his backstory to the fact that [[spoiler: he almost succeeds with his plan.]]
* The fact that Larry-3000 from WesternAnimation/{{TimeSquad}}, appears to be dismantled, in his cameo appearance of the first episode, as if someone murdered/tortured him.
* Vexus' plan to convert Jenny in "Extreme Makeover", where a bug she plants in Jenny's system causes her to hideously mutate into a violent, supersized robot. Jenny's fear as the changes escalate is unmistakable. [[spoiler: She gets better though.]]