History Webcomic / SleipnirEquineInvaderFromJupiter

In 2021, it was announced that ''Sleipnir: Equine Invader from Jupiter'' would be crossing over with fellow indie kaiju webcomic ''Webcomic/GurralTheSmasher'' in a spinoff aptly titled ''Gurral vs. Sleipnir''.

* {{Cyborg}}: Due to being spawned from a damaged Valkyrie unit, Fenrir ended up fusing with the components responsible for converting energy to matter--resulting in it growing larger and more powerful every time it eats.

* HairTriggerTemper: Clint Williams, a NASA scientist overseeing the satellite project that discovered Sleipnir, is introduced screaming into his phone while driving with a serious case of road-rage, and it's revealed he's at-risk of losing his job for blowing up at an intern.

''Sleipnir: Equine Invader from Jupiter'' is an indie {{kaiju}} webcomic written by Joe Cherry with art by Khaliah Ingram, which ran from 2020 to 2021.

* JerkWithAHeartOfGold: Clint Williams is a bitter, sarcastic hot-tempered jerk who lashes out at his employees and family alike, and initially wholeheartedly approves of the military trying to kill Sleipnir despite his sister's protests that the alien is innocent. However, he eventually has a HeelRealization and turns on General Kincaid when he sees how insane the man really is, and following the timeskip has improved his relationship with his father and coworkers.

* SacrificialLion: Just as the main characters think they've put Fenrir down, [[spoiler:it lunges and swallows side-character Cynthia and an unnamed soldier whole--killing them both immediately and leaving Cynthia's coworker Cris devastated.

* KillItThroughItsStomach: In the penultimate chapter "Shadow of Fenris", [[spoiler:Fenris swallows Sleipnir whole and starts draining the alien horse's power reserves... which overloads its body, resulting in its muscles rupturing through its skin before it explodes.]]

* MetamorphosisMonster: Fenris starts off as a skinless canine creature with a sci-fi Tesla coil and tubes sprouting from its back and neck. After swallowing a nuclear missile, it undergoes a metamorphosis into a more powerful form with an armour-plated head and two Tesla coils sprouting from its back instead of just one. [[spoiler:By the time it arrives on the battlefield, Fenris has mutated into a much larger black-and-red wolf-monster with markings resembling Sleipnir's own. After eating Tick Tock and Fafnir, it undergoes another metamorphosis into an even more powerful form big enough to swallow Sleipnir whole.]]

* ReligiousAndMythologicalThemeNaming: Several to Norse mythology. The giant purple eight-legged alien horse is codenamed Sleipnir after the eight-legged horse demigod, the hummingbird {{robeast}}s are codenamed Valkyries after the divine warrior-women, the draconic BioweaponBeast is codenamed Fafnir after the greedy dwarf-turned-venomous dragon from the ''Literature/TheSagaOfTheVolsungs'' and the ''Literature/Nibelungenlied'', and the cyborg canine BioweaponBeast is codenamed Fenris after the god-eating wolf. Tick Tock the rabbit {{robeast}} is called out for breaking the pattern by Akash, who notes that it seems more like something out of ''Literature/AlicesAdventuresInWonderland''.

* SacrificialLion: Just as the main characters think they've put Fenris down, [[spoiler:it lunges and swallows side-character Cynthia and an unnamed soldier whole--killing them both immediately and leaving Cynthia's coworker Cris devastated.

* SuperScream: Fenris is capable of emitting a howl powerful enough to stun Sleipnir and knock planes from the sky.

** When Fred sprays Fenris in the face with a fire extinguisher, the cyborg canine BioweaponBeast pauses to level an unamused DeathGlare at him before trying to eat him.
* TooSpicyForYogSothoth: Fenris lunges at Cris to devour her... and then stops, sniffs her, and abruptly leaves to go eat a nuclear missile instead.

* AnimalNemesis: Downplayed with Clint regarding Jericho, a stallion with whom he had an antagonistic relationship as a child. Still alive and healthy as, well, a horse almost two decades later, Jericho promptly headbutts Clint into a patch of mud and feces before trying to bite him, forcing Jess to break up the fight before her brother can get hurt. Despite the antagonism between them, Clint is heartbroken when General Kincaid kills Jericho when the horse attacks him to protect Clint.

** When General Kincaid says that Clint reminds him of himself when he was younger, his lieutenant, Jimenez, snarks that for a moment he thought there were too of him.

* FaceHeelTurn: The SequelHook reveals that Cris blames Sleipnir for Cynthia's death and has started a paramilitary organization called Niflheim in order to hunt the equine alien down and kill it. Making matters worse, Cris decided to use the visage of Fenrir--the monster that ate Cynthia---as Niflheim's logo.

* FinishingStomp: Upon discovering that General Kincaid has killed her beloved horse Jericho, an enraged Jessica delivers a brutal stomp to his head while he struggles to break free from the ropes binding him. She's stopped from killing him, but she does knock out several teeth.
* HeelRealization: When General Kincaid smugly orders for the military to finish Sleipnir off when the alien horse is badly injured TakingTheBullet for them, Clint realizes what a monster he is and attacks him. Kincaid easily overpowers Clint and smugly tries to break his leg, then kills Jericho when the horse tries to protect Clint. This leads to Jimenez--already troubled by Kincaid planning to drop a nuke in the middle of Austin, Texas--deciding that his boss has gone too far and knocking Kincaid out with a punch to the head.

* InsaneAdmiral: General Kincaid is a gleeful {{warhawk}} who's downright giddy for the chance to nuke what he believes to be an incoming asteroid, and when it's protested that Russia and China may take umbrage he sneers that they can bitch to the President about it. When Sleipnir makes Earthfall, he immediately launches an attack on them--deliberately almost destroying the Williams' farm in the process--and wants to recruit Clint to build newer and better ballistic missiles to prep for World War III. When Fafnir and Tick Tock are spawned, General Kincaid decides to let them run rampant through Austin, Texas to bait Sleipnir back to Earth, kill Sleipnir when they're weakened fighting the "gecko" and "rabbit", and then mop up the two remaining kaiju with a nuke--threatening to strap a soldier to the bomb when he expresses reluctance to comply with the orders.
* KillItThroughItsStomach: Fenrir swallows Sleipnir whole and starts draining the alien horse's power reserves... which overloads its body, resulting in its muscles rupturing through its skin before it explodes.

* MetamorphosisMonster: Fenrir starts off as a skinless canine creature with a sci-fi Tesla coil and tubes sprouting from its back and neck. After swallowing a nuclear missile, it undergoes a metamorphosis into a more powerful form with an armour-plated head and two Tesla coils sprouting from its back instead of just one. By the time it arrives on the battlefield, Fenrir has mutated into a much larger black-and-red wolf-monster with markings resembling Sleipnir's own. After eating Tick Tock and Fafnir, it undergoes another metamorphosis into an even more powerful form big enough to swallow Sleipnir whole.

* ReligiousAndMythologicalThemeNaming: Several to Norse mythology. The giant purple eight-legged alien horse is codenamed Sleipnir after the eight-legged horse demigod, the hummingbird {{robeast}}s are codenamed Valkyries after the divine warrior-women, the draconic BioweaponBeast is codenamed Fafnir after the greedy dwarf-turned-venomous dragon from the ''Literature/TheSagaOfTheVolsungs'' and the ''Literature/Nibelungenlied'', and the cyborg canine BioweaponBeast is codenamed Fenrir after the god-eating wolf. Tick Tock the rabbit {{robeast}} is called out for breaking the pattern by Akash, who notes that it seems more like something out of ''Literature/AlicesAdventuresInWonderland''.
* {{Robeast}}: The Valkyrie Units are hummingbird-shaped alien robots that attack Sleipnir seeking to drain their energy. One of them absorbs a nuclear explosion instead, crash-landing on Earth. They serve as incubators for alien bioweapons shaped like a wingless dragon, a rabbit, and a dog, which they inject with Sleipnir's energy.
* SacrificialLion: Just as the main characters think they've put Fenrir down, it lunges and swallows side-character Cynthia and an unnamed soldier whole--killing them both immediately and leaving Cynthia's coworker Cris devastated.
* SequelHook: As Austin, Texas rebuilds and the main characters relax and recouperate, Cris finds a disgraced Kincaid--dishonourably discharged for his actions--sulking in a bar and recruits him to help her avenge Cynthia by killing Sleipnir. Meanwhile, in deep space an ancient space station built by the civilization that created the Valkyrie Units reactivates and sends a probe called Sunder to investigate what happened to them.
* ShipTease: Akash falls for Jess the moment she puts Clint--Akash's intimidating boss--in his place for yelling at their father.

* SuperScream: Fenrir is capable of emitting a howl powerful enough to stun Sleipnir and knock planes from the sky.

** When Fred sprays Fenrir in the face with a fire extinguisher, the cyborg canine BioweaponBeast pauses to level an unamused DeathGlare at him before trying to eat him.
* TooSpicyForYogSothoth: Fenrir lunges at Cris to devour her... and then stops, sniffs her, and abruptly leaves to go eat a nuclear missile instead.

* AbusiveParents: According to Clint, his parents viewed his interest in science as a waste of time and would beat him if they caught him slacking on chores. When he came home with an almost-broken arm from being bullied, his father slapped him and called him a sissy [[spoiler: Later revealed to be an exaggeration by his Sister]]. Clint ''finally'' CallingTheOldManOut leads his dad to have a HeelRealization, later morosely asking Jess [[WasTooHardOnHim if he's a bad father]].
* AnimalNemesis: Downplayed with Clint regarding Jericho, a stallion with whom he had an antagonistic relationship as a child. Still alive and healthy as, well, a horse almost two decades later, Jericho promptly headbutts Clint into a patch of mud and tries to bite him, forcing Jess to break up the fight before her brother can get hurt. Despite the antagonism between them, Clint is heartbroken when General Kincaid kills Jericho when the horse attacks him to protect Clint.

** Fafnir can spit torrents of corrosive OminousObsidianOoze from its mouth.

* AbusiveParents: According to Clint, his parents viewed his interest in science as a waste of time and would beat him if they caught him slacking on chores. When he came home with an almost-broken arm from being bullied, his father slapped him and called him a sissy [[spoiler: Later revealed to be an exaggeation by his Sister]]. Clint ''finally'' CallingTheOldManOut leads his dad to have a HeelRealization, later morosely asking Jess [[WasTooHardOnHim if he's a bad father]].

* AbusiveParents: Clint's father and his mother viewed his interest in science as a waste of time and would beat him if they caught him slacking on chores. When he came home with an almost-broken arm from being bullied, his father slapped him and called him a sissy. Clint ''finally'' CallingTheOldManOut leads his dad to have a HeelRealization, later morosely asking Jess [[WasTooHardOnHim if he's a bad father]].

''Sleipnir: Equine Invader from Jupiter'' is an indie {{kaiju}} webcomic written by Joe Cherry with art by Khaliah Ingram.

In 2021, it was announced that ''Sleipnir: Equine Invader from Jupiter'' would be crossing over with ''Webcomic/GurralTheSmasher'' in a spinoff aptly titled ''Gurral vs. Sleipnir''.

* LikeFatherUnlikeSon: Clint Williams is a scientific genius who works for NASA, contrasting his older sister Jess and father --who run a horse ranch outside Austin, Texas. This fosters an antagonistic relationship between them, with Clint resenting his father's tough parenting and his sister for being the golden child.

* JerkWithAHeartOfGold: Clint Williams is a bitter, sarcastic hot-tempered jerk who lashes out at his employees and family alike, and initially wholeheartedly approves of the military trying to kill Sleipnir despite his sister's protests that the alien is innocent. However, he eventually has a HeelRealization and turns on General Kincaid when he sees how insane the man really is.

* JerkWithAHeartOfGold: Clint Williams is a bitter, sarcastic hot-tempered jerk who lashes out at his employees and family alike, and initially wholeheartedly approves of the military trying to kill Sleipnir despite his sister's protests that the alien is innocent.

* MythologicalThemedNaming: Several to Norse mythology. The giant purple eight-legged alien horse is codenamed Sleipnir after the eight-legged horse demigod, the hummingbird {{robeast}}s are codenamed Valkyries after the divine warrior-women, the draconic BioweaponBeast is codenamed Fafnir after the greedy dwarf-turned-venomous dragon from the ''Literature/TheSagaOfTheVolsungs'' and the ''Literature/Nibelungenlied'', and the cyborg canine BioweaponBeast is codenamed Fenrir after the god-eating wolf. Tick Tock the rabbit {{robeast}} is called out for breaking the pattern by Akash, who notes that it seems more like something out of ''Literature/AlicesAdventuresInWonderland''.

'''Kincaid:''' Haven't you boys ever watched a giant monster movie? Natcho, the sunovabitch is about to fire! Get us the hell out of the way!!

-->''''David:''' You're nothing more than a glorified fireworks technician, wasting money firing oversized bottlerockets into the sky! You don't do anything productive!