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'''Callie Spengler''' is the daughter of the late Egon Spengler, one of the original Ghostbusters. Growing up, she never really knew her father. In fact, she had always resented him for "abandoning her" as a child. [[Image:CalliePrePossession001.jpg|thumb|right|200px|Callie Spengler, prior to her possession by Zuul.]] She had two children, Trevor and Phoebe Spengler. They were both brilliant children who had a lot going on mentally.

Callie and her kids were evicted from their home after not having payed their bills, and the only place they were able to stay for the time being was Egon's old farmhouse in a little town called Summerville. They tried to adjust to their new lifestyle, with some minor complications here and there. One day however, things came to a head when a large earthquake hit the town. Phoebes summer school teacher, Gary Grooberson, whom Callie had met the same day, was very confused by this, as the town had no fault lines and therefore wasn't susceptible to any sort of earthquake. Callie eventually gave in to her emotions and went on a dinner date with Gary, as she was interested in him.

[[Image:CalliePossessed001.jpg|thumb|left|200px|Callie, after her possession by Zuul, snarls ferociously with red eyes ablaze.]]
The date seemed to be going well, until suddenly, a blue ghost dove through the restaurant they were eating at. This led to Callie breaking her kids, as well as their friends Podcast and Lucky, out of jail after they had driven the old Ghostbusters' car, the Ecto-1, without a license. 

Callie eventually found herself in the basement of her father's farmhouse, where she discovered the truth about her father. He had never meant to abandon her. He was trying to save the world. A couple months prior, Egon was killed by the spirits of [[Zuul]] and [[Vinz Clortho]], the pets/minions of the evil demigod [[Gozer the Gozerian]], after preventing them from being able to conduct a ritual to bring Gozer into this world. Before Callie could dwell on it too much, however, the [[Terror Dog]], Zuul, leapt out of the shadows and possessed her body. The ghost of Egon could do nothing but watch in horror as his daughter was violated by a demonic beast. In the process, Gary was also possessed by Vinz Clortho after a chaotic chase through a Walmart parking lot. Gary, now possessed by the Terror Dog, made his way to the Shandor Mining Company, a sort of [[Temple of Gozer]] that was disguised by Ivo Shandor as an ordinary mine. Gary was able to destroy most of it, leaving the main temple exposed. It was the exact same as the one from 1984: a staircase leading up to a crystalline door with two pedestals for the Terror Dogs. Gary smiled as he was staring at his destiny. Meanwhile, Callie, now possessed by Zuul, sat in the living room of the farmhouse, awaiting her Keymaster. Her former children arrived and tried to talk to her. Callie barked and roared at them in defiance before the house was hit with a blinding light. Callie smiled as she saw that Gary had opened the temple. She then snarled at the others before diving out of the window and galloping towards the temple on all fours, like she would as a Terror Dog. Gary sat in a field atop a large boulder, awaiting his gatekeeper patiently. Callie finally approached and Gary sensed her presence. He got up and began to run towards her like and excited puppy. Callie then ripped her clothes off, manifesting a bright gold dress underneath. Gary stared at her, stunned. He complemented her eyes. Callie
[[Image:CalliePossessed002.jpg|thumb|right|200px|Callie, possessed by Zuul, wears a bright gold dress as she approaches Gary, possessed by Vinz Clortho]]smiled before responding in a foreign, demonic language, presumably thanking him and complementing his looks. Gary thanked her in English and, before he could forget, he handed her a flower he had found in the field. Callie sniffed it curiously and smiled before swallowing it whole like a rabid animal. Callie stared at him with demonic lust in her eyes and growled. The two then got down on the grass and proceeded to have demonic sex. Afterwards, the couple made their way to the temple and proceeded to walk up the staircase towards two opposite pedestals, hand in hand. Callie's former children watched them from afar as she and Gary mounted their pedestals. Phoebe noted that her mother was up there. Callie and Gary then raised their arms up to the sky. Callie smiled as she was struck by supernatural lightning, along with Gary. They both thrashed about at the temple began to open up. The two eventually got down on all fours under the weight of the lightning striking them. Callie and Gary became Terror Dogs. 

Once the transformation was complete, Callie lifted her paw and roared ferociously as the lightning ran off of her dog body. Gary wagged his tail as he stared at her, growling. Callie stood up and stared at her former children with nothing but triumph and demonic rage. She wagged her tail and roared at them, slobbering as Gary waited patiently for her to finish. Callie and Gary then leapt up to the top of the temple atop two other pedestals and awaited their master's arrival. Once Gozer finally arrived, she was greeted by Ivo Shandor himself who had been in stasis hibernation for decades. He stated how he had waited for this moment for years and that he had built this temple for Gozer in case she had ever returned to Earth. Gozer caressed his face sympathetically, pondering the idea of having a partner in crime along with her dogs. But Gozer works alone. She grabbed Ivo's hair and ripped him clean in half. The demigod showed zero mercy. Gozer then bent down next to Callie and scratched her chin with her lightning-tipped fingers. Callie purred and nodded her large head as her master pleasured her. The dogs then snarled and roared as they leapt down back to their pedestals, now engulfed in a mystical smoke, along with the rest of the temple. Gozer then leapt down to her throne and sat atop it. Gary growled happily as his master took her place. The demonic trio sat there, docile, awaiting the right time to begin ruling the world. Callie looked around in triumph, glancing at Gary and Gozer, ready to serve her master forever.
[[Image:CallieTerrorDog006.png|thumb|left|200px|Callie is unrecognizable after turning into a Terror Dog. She stares at her paw with her mouth hanging open, in awe of what she has become]]

However, as Callie, Gary and Gozer's victory was at hand, Callie's former daughter, Phoebe, came out of the shadows, nervously greeting Gozer. Callie snarled at her as she approached her master. Callie instantly recognized her as she stepped closer, as she remembered the incident at the farmhouse. Phoebe stared at Callie in fear, knowing full well that she was no longer her mother. Callie sneered as she held back every urge to not attack her, as to not disobey her master. Phoebe began to fearfully crack jokes at Gozer in order to distract her and to calm herself down. Gozer seemed all but pleased with the display, and so did her dogs. Meanwhile, Phoebe's friend, Podcast, controlled an RC car fitted with a ghost trap and carefully maneuvered it towards Callie. The trap slowly moved under her dog body until it accidentally bumped into her paw. Callie twitched slightly as she was startled by the disturbance, nearly losing her footing. The dog growled as she turned her head towards Podcast, barely seeing him. Callie didn't think too much of it and continued to focus her attention on Phoebe. She and Gary stared at her from atop their pedestals, snarling and purring menacingly as Phoebe wasted Gozer's time. Callie smiled, knowing full well that her master could get rid of her easily. Meanwhile, Gary stared at her in confusion, wondering how she could be so eager to toy with his master with childish jokes. Gozer then asked Phoebe if she was prepared to die in sacrifice to her. Phoebe replied and said she was only twelve and asked if Gozer was prepared instead. Just then, Podcast successfully positioned the ghost trap directly underneath Callie's dog body. It opened up and began to trap the spirit of Zuul within it, weakening Gozer's form in the process. Callie emerged, back to human form, and tumbled down the temple staircase, her legs weak from being on all fours for so long. Gary roared out of anger as he watched his mate leave his side. Gozer writhed in agony as Zuul was taken away from her. Gary turned his attention to his master and stared at her in horror. [[Image:CallieGozerPet002.png|thumb|right|200px|Callie, after turning into a dog, purrs demonically as her master, Gozer, playfully strokes her chin.]]

Gary put two and two together and realized that Zuul was trapped, which caused him to chase after her throughout the streets of Summerville. As Gary chased them, the clumsy Terror Dog hit his head on a park bench and whimpered in pain. Callie was informed of what had happened to her by her kids, mainly the fact that she had turned into a dog and probably had sex with Gary prior to that. Her son Trevor added on that they were being chased by her boyfriend. Callie mainly seemed confused by that fact that they referred to Gary as her "boyfriend" and not at all the fact that he had become a dog. After reaching the farmhouse and defeating Gozer once and for all, Gary became human again, along with Trevor's would-be-girlfriend, Lucky, who had also turned into a dog after being possessed by Zuul. Callie rushed towards Gary and asked if he was alright. He mentioned that the whole experience was weird and asked her why he was bleeding. She informed him that, while he was a dog and was chasing after them, he hit his head on a park bench which, interestingly, made him bleed in his human form. Gary remembered all of this, surprisingly. He then clarified with Callie that they he thinks that they had sex before turning into dogs and summoning Gozer. She was fully aware of this fact and stared at him intently. Afterwards, Callie finally met her father once again, but as a ghost. She was finally able to get the closure she desperately needed before he ascended to the afterlife.



== Gallery ==

<b>Human Form</b>

<gallery widths="180">
CallieRitual001.png|Callie walks hand in hand with Gary to their destiny.
CallieRitual002.png|Callie walks with Gary up the staircase towards her pedestal as her former children watch.
CallieRitual003.png|Callie lets go of Garys hand and stares at her pedestal as she walks up to it.
CallieRitual004.png|Callie stands atop her pedestal and smiles ferociously.
CallieRitual005.png|Callie begins to raise her arms as she stares into the sky, ready to begin the ritual.
CallieRitual006.png|Callie fully raises her arms to the sky.
CallieRitual007.png|Callie is struck by supernatural lightning as the transformation ritual begins.
CallieRitual008.png|Callie gyrates violently as she is struck by lighting. Her former children watch on in horror.
CallieRitual009.png|Callie crouches down and fully cedes to Zuul's control as the lightning continues to strike her human body.
CallieRitual010.png|Callie gets down on all fours like a dog as she fully embraces her transformation.



</gallery>

<b>Terror Dog</b>
<gallery widths="180">
CallieTerrorDog001.png|Callie stands on all fours, her hands barely touching her pedestal as the lightning strikes her human body.
CallieTerrorDog002.png|Callie fully stands on all fours like a dog and arches her back.
CallieTerrorDog003.png|Callie begins to turn into a Terror Dog. Her horns and tail emerge first.
CallieTerrorDog004.png|Callie fully turns into a Terror Dog as the lightning continues to strike her. She stares at her hind legs in order to confirm that the transformation was successful.
CallieTerrorDog005.png|Callie raises her beastly paw off of her pedestal and wags her demonic tail as she lets out a guttural roar.
CallieTerrorDog006.png|Callie opens her blood-red eyes for the first time and stares at her Terror Dog body in awe.
CallieTerrorDog007.png|Callie wags her tail as the rest of the lightning escapes her dog-like body.
CallieTerrorDog008.png|As the lightning disappears, Callie stares at her former children and smiles ferociously, unable to recognize them as the only thing she desires now is to serve her master.
CallieTerrorDog009.png|Callie slobbers as she lets out a deafening roar with such force that it causes her tail to blow in the wind.
CallieGozerPet001.png|Callie runs to the top of the temple to greet her newly summoned master. Gozer kneels down beside her pet and caresses her snout with her demonic hands.
CallieGozerPet002.png|As her master pleasures her, Callie nods her head and purrs lovingly at Gozer.
CallieTerrorDog010.png|Callie leaps down to her pedestal as her master observes from above.
CallieTerrorDog011.png|Callie barks ferociously as she leaps down towards her pedestal.
CallieTerrorDog012.png|Callie's tail blows in the wind as she gallops towards her pedestal, her large body making the ground shake violently with each leap.
CallieTerrorDog013.png|Callie stands atop her pedestal alongside Gary. The dogs grin ferociously as their master approaches her throne.
CallieTerrorDog014.png|Gozer sits atop her throne while her Terror Dogs, Callie and Gary, stand guard atop their pedestals.
CallieTerrorDog015.png|Callie stands guard and protects her master atop her pedestal, baring her sharp teeth.
CallieTerrorDog016.png|Callie notices her former daughter, Phoebe, approaching Gozer's throne. The dog growls at her, but doesn't attack her, as her only order and goal is to serve Gozer.
CallieTerrorDog017.png|Callie stares angrily at Phoebe as all she can do is growl at her from afar.
CallieTerrorDog018.png|Callie stands atop her pedestal and wags her tail as she listens to Phoebe confront Gozer. The dog fails to notice the RC ghost trap rolling up behind her.
CallieTerrorDog019.png|The ghost trap accidentally bumps into Callie's leg. The Terror Dog grunts as she is startled by the unexpected disturbance.
CallieTerrorDog020.png|Callie observes Phoebe as she talks to Gozer.
CallieTerrorDog021.png|Callie growls as she turns her head towards the disturbance.
CallieTerrorDog022.png|Callie barely notices Podcast, who ducks behind rubble to avoid being seen by the Terror Dog.
CallieTerrorDog023.png|The ghost trap repositions itself and slowly maneuvers around Callie's dog-like leg.
CallieTerrorDog024.png|Callie growls at Phoebe and grins ferociously as she knows that her master will succeed in dealing with her. Gary stares at her, confused as to how a person, especially a child, could be so calm when speaking to a demi-god. Nevertheless, Gary still growls at her in unison with Callie.	
CallieTerrorDog025.png|The ghost trap stops as it is fully underneath Callie's body. It's so close that the dog's breathing can be heard.
CallieTerrorDog026.png|The ghost trap opens up and begins to trap the spirit of Zuul within it.
CallieTerrorDog027.png|Callie roars as the trap begins to absorb her Terror Dog form.
CallieTerrorDog028.png|Callie roars louder and tilts her head back in pain as her dog form disappears.




</gallery>

<b>Becoming Human Again</b>
<gallery widths="180">
CallieHumanAgain001.png|Callie turns into a human again. Her mouth hangs open out of shock and because she was just roaring as a Terror Dog.
CallieHumanAgain002.png|Callie tumbles down the stairs of the temple as she is not used to standing on two legs like a human. Gary roars at her angrily for not being in her dog form.