Disclaimer: I do not own either the BtVS series or the Marvel comics or the Marvel Zombies series.

Timeline: After the Marvel Zombies left Earth but before the mutants of asteroid M land and Season 5 finale of BtVS.

Prologue

Andrew walked across the ruined city; he didn't know where he was but he that didn't like it. He looked around confused, it looked like New York but there was nothing here other than rotting skeletons and ruined buildings

Vision stood in the area where the zombies had left him, they were gone now; Wanda was gone and they had killed each other for the last bit of meat in the city no one was left, no one at all in this empty city, he still couldn't move but something activated his sensors but was it a human or zombie?

As he began to scan he sensed a heartbeat and it was erratic, the human was frightened but it was coming closer.

Andrew frowned as he was walking, this place was scary and it was getting dark and even scarier, he was jumping at every sound but this city was so empty, so quiet other than the sound of crumbling buildings.

A voice caught his attention, it was over his radio, the one Jonathon gave him for his sixteenth birthday, he heard, "Come to me human, quickly. I shall guide you to safety."

Andrew frowned, he probably should go that way, it was someone at least as he walked towards the place.

Vision activated the Kingpin's former base of operations lights so the human could see, as he turned his sensors towards the sound of movement he spotted the human, a very young human; sixteen, seventeen years old if he missed his guess.

As Andrew got into the building, his heart pumping, he closed the door behind him and sighed with relief, as he walked in he said, "Umm, hello?"

"In here," a voice whispered, "Come boy, hurry."

Andrew walked and he saw some sort of machine in pieces, the robot looked at him and smiled, almost. It said, "Greetings, I am the Vision and you are the first life form that is not undead or being brought here as food that I have sensed in months but the zombies are gone I believe, how did you survive?"

"Umm," Andrew mumbled, "I don't know what you're talking about?"

"Explain," Vision said, "Please and I shall explain to you."

As they exchanged information Vision cocked his head and said, "Interesting, a random dimensional convergence, it linked our two different realities."

Andrew nodded and Vision cocked his head and said, "Andrew, you must survive, I failed too much, far too much and now you have appeared, this world has little left but plant life."

"Umm, you're sure the zombies aren't around, right?" Andrew asked.

Andrew sat down confused and a bit scared and Vision said, "Sleep Andrew, it is safe here, the zombies are gone."

Andrew tried to sleep but he couldn't, he once he woke up in a cold sweat and looked around, he thought he heard something but Vision assured him that his sensors had detected nothing.

"Umm," Andrew said next morning, "Umm, I want to go home, I really want to go home."

"Understandable Andrew," the Vision said, "But I do not know how to get you home unless you have a working knowledge of interdimensional portals or how to build them," at Andrew's blank look the Vision sighed, "I suppose not, do you know magic?"

Andrew suddenly smiled, "Yeah, I know magic, umm, demon summoning. I uhh summoned flying monkeys but not much else."

The Vision frowned and said, "Then you must learn technology, that is the only way. I shall guide you Andrew and teach you."

Over the next few months the Vision taught Andrew everything it knew of technology, Andrew scrambled across the ruins of New York City and into Stark International to take pieces of the technology that the Vision decided once Andrew managed to carry him to the building, they would make their home there as it was safer plus very well lit, Andrew was far too nervous but perhaps in this case he had every right to be uneasy.

Vision even taught Andrew standard self- defence techniques plus fire arms training, of course his guns were energy based which Andrew found to be cool as he would use them to clear the bodies and pieces of flesh he found.

Andrew was grateful for the people who had grown gardens of vegetables as they were the main sources of his food.

One day as Andrew crawled around the ruins of a building that Vision had called four freedoms plaza, Vision told him about the team here, they were great heroes and even greater monsters when they were infected by their team leader: Reed Richards.

As he explored the building he found two small skeletons and nearly vomited.

Vision stated, "Sue and Reed Richard's children, they were consumed by Jennifer Walters."

Andrew looked down and said, "I think I'm going to be sick, I mean they were heroes and you said they kept their intellect and stuff like that right?"

"Correct," Vision stated, "This confused me as well, I observed that the, as you would state, "good guys" show sorrow and concern over the lives they had taken to feed themselves, Peter Parker was one such individual though as I believe he had no qualms about J Jonah Jameson."

Andrew shuddered as he managed to get the Fantastic four's computer working again, the computer showed him a video recording of Reed Richards giving some nutty speech about spreading the gospel as he was trying spread the infection to other universes.

He shuddered and muttered, "Wow, I really don't want this thing coming to my universe."

Vision pondered Andrew's words and decided that Andrew was correct, this contagion could not spread farther than it already had, Andrew could aid him in this, no, Vision corrected himself, would aid no matter what, he had seen the devastation of the contagion and they would find a way to combat it.

Andrew looked at the computer as the files downloaded, his heart started to beat fast and his fertile imagination was creating shadowy images of the dead rising and eating him, he could almost feel the teeth at his flesh and nearly screamed when the machine signalled that it was done

As Andrew made his way back to Stark International he looked at the setting sun and ran back, fearful of the dark, he knew there was no zombies, no bad people but this empty city was scary even if he had a friend like the Vision.

Vision watched as Andrew ran back into the building, he didn't agree with Andrew's irrational fear of the dark as the city was empty; there was nothing here to harm him other than the ruin itself.

Andrew got in and said, "Umm, hey, I got the files you wanted."

"Indeed Andrew," Vision stated, "And again I must tell you that the zombies are gone, they have been gone for months, though it has been closer to a year now."

Andrew sighed and said, "Keep the lights on tonight, okay?"

"Of course Andrew," Vision said as he watched Andrew go to sleep, after he was sure that Andrew was asleep he turned the windows off and went back to work.

'But first,' he thought, 'I will work on a gift for Andrew.'

The next month was boring for Andrew as he continued to scavenge supplies from local stores, Vision watched as Andrew brought back dried fruit and seeds and thought, 'Wise, those would aid him greatly,' as he watched Andrew plant them in a makeshift greenhouse, plus he had gotten books and video game systems too, as well as the information that Vision thought was important.

Andrew shuddered as he saw the days shorten and it was starting to get chilly too, the dark city caused him to shudder, he wasn't sure about this as he had been here for months. He liked the Vision guy, who was being super cool in trying to help him get home, but as he watched the first flakes of snow fall over the darkened city he had watched those stupid DVDs over and over again but even he was started to get bored of them.

One day before Christmas, or at least Andrew assumed it was Christmas, Vision called him to the main lab and said, "Andrew, this is a present for you, I believe you will like it."

Andrew saw a huge package on the table and smiled as he saw that it was wrapped up like a Christmas present, he rushed towards it and tore the wrapping off and saw a suit of silver armour with blue lights on it.

Vision suddenly asked, "Do you like it Andrew?"

"Umm, yeah," Andrew said as he looked at the armour, "It looks cool."

"I created it for you Andrew, it is keyed to your mental signature so no one else can wear it, please put it on."

Andrew looked around for a switch to open it up and jumped back in shock as it opened up, Andrew looked at it warily and Vision said, "Please put it on, it won't hurt you."

As Andrew put on the armour he found that it fit him perfectly, as he put the helmet on his head the optical circuits lit up and a blue HUD showed up showing his vitals, he looked around; it didn't look as heavy as he thought it did.

"This is so cool!" Andrew yelled happily as he ran around giggling.

"Tomorrow," the Vision said, "I shall begin training you in how to fight with it and use its myriad weapon systems in combat situations."

The next day Andrew woke up and looked at the armour, he heard Vision state, "Andrew, I developed this armour with multiple weapon systems and defence, you will need to learn to use all of them."

Throughout the winter months Vision trained Andrew hard using Tony Stark's holographic projectors to train him in the use of the weapons, plus to make the portal device.

Vision found Andrew had near perfect aim with weapons, most likely thanks to his video games, but he was overeager to use them so this hyper streak would have to be tempered.

Andrew was amazed at the technology involved, he had guessed that this scary world would had been at his level of technology but this armour was beyond even his world's tech.

One day as Andrew was trying the flight systems he looked at the dead city below him and wondered what had it been like with heroes flying or swinging everywhere, as he headed home he saw a shape moving in one of the windows, panicked and was about to fire when he heard the Vision state, "Andrew stop, it is just me, I've finally rebuilt my body

Andrew got in and saw the Vision walking towards him and he looked good, the Vision stated, "Andrew, my original plan was to let you go home alone but now I would like to go home with you, we would work together to protect your planet."

"Umm," Andrew said, "I guess so, I've guessed that you wouldn't want to stay here and you are like my friend."

The Vision said, "We should go now as I have finished the portal, please collect what you would like take with you."

Andrew nodded, he was almost giddy and he bet that Jonathon and Warren would be so jealous of his super cool new friend and armour, he ran off and collected the things he wanted to keep and as he rushed back he saw the Vision finishing the final bit of the portal.

The Vision opened the portal up and said, "Andrew, I've found your universe's quantum signature and you need to go first to make sure it's safe."

As Andrew jumped in the Vision smiled, he began working on the portal to make sure it would self destruct five seconds after he left, he wondered if his new crusade would be good for Andrew as the boy was so young but he supposed that if he was there to protect and guide then the boy things would be alright, he had downloaded the information for the computers of this world so the history and technology would never be lost.

He walked through and said, "For your legacy's my friends, I'll guide and mold this boy's body and mind to something greater than whatever destiny had chosen for him, he shall be our legacy to the multiverse."

TBC

How should Andrew's experience in the city of the dead affect him? Should Andrew appear before or after Sunnydale's collapse? How will the Vision take to the new universe? What crossovers would you like to see: Smallville, Young Justice, Justice League, Stargate or other? How should he use his new technology?

Please rate and review.