Hello! I'm very very busy with college BUT i came up with this idea a couple hours ago after i watched the last episode of Riverdale!

It's a Riverdale slash Legacies, Doctor Who, Arrow, DC Legends of Tomorrow, The Flash, Supergirl, The Gifted and The Magicians crossover fanfiction. I hope you like it! Also Rebecca and Josh Gilbert are part of a story i'm working on if you want to understand who they are at least a little bit, the story is called The Girl He Never Noticed fanfiction. I hope you enjoy it!

But please, please leave a comment saying if you liked that idea or not. I haven't done a complete background built for Archie's witch side but i will work on it if you like it. Try not to be rude please!

Thank you!

Enjoy!

Keep On Fighting

Archie was broken and troubled thinking that his expectations when he returned to Riverdale would be as if nothing had changed but him.

But he was wrong.

Everyone and everything had changed.

Veronica broke up with him and he failed his SATs and now he had to repeat the year at school alone without his friends.

Then his mind drifted to his time in Canada…

Many might have thought that he lived in the wild surrounded by nature but it wasn't all true, yes he lived for the first few months in the wild until something unexplainable happened…

One moment he was attacked by a bear and he laid dying in his bed in his small cabin and the next he woke up at the sounds of a girl's yells and he was in a classroom.

That was when everything became surreal and at the same time he found where he belonged…

Only to realize that this place had an expiration date or so he came to learn…he wasn't exactly kicked out but he woke up in a hospital…

He never saw the people he met or the places he's been to didn't exist here.

But what he learnt during his stay there was enough to help him keep hoping that he could go back at some point or that he would find a way to have access to that place whenever he wanted or needed.

After all he was left with a souvenir…a souvenir that reminded him of his adventure and what led him there.

He stood and stare himself in the mirror of his school…then the longing of going back there along with the need to turn back in time and his innocence suffocated him then he punched the mirror shuttering like a million pieces like his soul, wants and needs.

Flashback:

"Archie! Yo! Earth to Archie! Did you fall asleep or what?" A girl's voice shook him and he looked up to see a girl with auburn hair and another with dirty blond hair looking at him expectantly.

"If we are going to be late you better have a good plan to spent the day." The dirty blonde said to him with a chuckle and Archie just blinked at them.

"Who are you?" Archie asked them and the dirty blonde girl raised her eyebrows confused while the auburn haired girl sighed tiredly and raised her hand in a stop sign that reminded him of Cheryl Blossom mannerism. The dirty blonde girl froze in time while the auburn girl smiled at him and she sat next to him.

Archie stared wide eyed.

"My name is Rebecca Gilbert and I'm the gatekeeper of Hell and I knew you were dying so I took your soul in this Earth's reality and established you in this school. Your name is still Archie Andrews but now you are a witch too not human just so you can fit in. So, play along please, no one knows what I did because it was against the rules. But it's not your time, Archie." Rebecca told him serious and at the end she kindly smiled as she patted his shoulder encouragingly.

"Okay…so what is my backstory?" Archie found himself accepting the fact that this was his new reality…it was better than being chased by your girlfriend's dad.

He spent weeks with Rebecca catching up on his life in this Salvatore Academy and then he caught up in classes too and tested his magic.

Soon enough he found himself seeing how those kids weren't like the kids in Riverdale, naïve, they were just like him.

He made friends and even had a crush on Rebecca but from what his new best friend told him Josh who happened to be Rebecca's younger brother she was pinning over a guy named Trevor Holden from Seattle she met during a recruiting mission.

His life had find some sort of peace. Until the appearance of long forgotten creatures terrified the school and made every student to become battle ready and all because of a knife unknown origins had gotten stolen by a boy named Landon Kirby which Hope Mikaelson, cousin of Rebecca and Josh Gilbert, had fallen for.

He found himself fighting off dragons and actual gargoyles, ironically he won instead of cowering in fear.

Without his knowledge he spent an entire school year and he graduated with honors from the Salvatore Academy only to be accepted at Brakebills University for witches along with Rebecca, Hope, Lizzie and Josie even Penelope!

He spent four years there learning more about witchcraft than he could even imagine he could, he met people that became his friends and he risked his life for. He traveled to Fillory and even confessed his love to Rebecca. Rebecca didn't say he didn't like him but she reminded him of Veronica and that she was the reason they couldn't be together.

That day he learnt that at some point a portal will be open and drive him back home and that he shouldn't by no means run from that portal or else he would be haunted by that portal until he willingly or unwillingly.

Why?

Because he had to return his destiny wasn't complete yet. Rebecca had reassured him that they will meet again when the time was right.

Archie had joked how all of this reminded him of The Chronicles of Narnia.

And then it happened, close to his graduation day, he and Josh were walking the streets of New York when they passed an alley and he saw it.

Josh couldn't see it but believed him anyways.

The two best friends hugged and said farewell while Archie told him of the goodbye letters he had written for their friends and where they were hidden advise him to give them to them.

Then he walked through it and woke up laying in the hospital.

Weeks he spent recovering from the bear attack he had long forgotten. He also found out that he was no longer 24 years but still 17 years old…

Yet he had his magic powers and knowledge.

He knew it because he could feel his magic running through his veins.

End of Flashback:

Archie spent maybe a week before as he was having milkshakes with Betty and Jughead the very same portal opened and Rebecca with Hope and beat up Landon jumped through.

"Archie help!" Rebecca yelled as Landon was laid down and then Archie saw them.

"It's a walking fish….and Eliot?" What the fuck is going on?" Archie exclaimed as he got ready to protect Landon and Betty with Jughead and the entire town if needed.

"STAGNO" Archie and Rebecca with Hope yelled all at once and all the monsters and Eliot froze when suddenly a blonde girl Archie hadn't seen before walked out of the portal and turned around and closed it.

"Who is she?" Archie asked confused and Rebecca smiled.

"Archie Andrews meet Lauren Van Straker of Earth 338." Rebecca said and the two shook hands.

"I have read about your family, sorry about your brother." Archie said with a mutual understanding and Lauren nodded.

Archie had read thanks to the Library in Brakebills all about the multiverse and Lauren's family history.

"So, what happened to Eliot? Are those monsters here because of the knife?" Archie asked confused as he kneeled and checked Landon's injuries.

He had forgotten Betty and Jughead who stood there shocked and gaping.

"Yes…and no." Hope said guilty and Archie looked at her.

"Then? Why is Lauren here? No offense but your earth is worse than ours…I mean theirs." Archie said to both Hope and Lauren as he stood up and folded his arms to his chest.

"Remember the quest for the keys and what Alice did?" Hope asked and Archie nodded.

"Hard to forget when she end up locked up and magic at least for them was complete taken down. What happened next?" Archie asked worried and Hope sighed.

"Alice managed to cut a deal with the Librarians and reversed what had happened and put all of them except us under a cloaking spell to protect us from the monster…yet the monster had already taken Eliot…we had no idea until he kidnapped Quinton and Kady with Margo remembered their actual lives and made the rest remember. Next thing they knock on mine and Landon's door asking for help to find Eliot and Q when suddenly a very bad earthquake shakes us. We thought it was the spell that had been broken but it was something far worse. Rebecca then appeared in our house and her eyes and nose was bleeding, she told us that the fabric of realities was becoming thin and both the multiverse and its infant timelines were crashing on to each other and Rebecca dark matter infected DNA was reacting to that…then Lauren showed up in our living room." Hope explained as she held Landon's hand and wiped tears then Archie looked at Rebecca in horror and he noticed the dry blood under her eyes, nose and shirt.

"Are you okay?" Archie asked her silently and Rebecca nodded.

"Where is Josh?" Archie asked and Rebecca looked at Landon.

"He was killed two years ago…alien attack called Dominators, he worked with ARGUS, got recruited after you left, Lyla came by my house after he was killed…Emily and Dan were divested. Emily was his wife and Dan their one year old son. We tried to invite you to both his and Hope's wedding but Cisco failed to open the portal until now." Rebecca said and Archie stumbled backwards.

Josh was dead?

All in the supernatural knew of the Starling City, Central City vigilantes and Earth 38's Supergirl. Yet they kept far away. It took Archie awhile to stomach their existence but he never guessed he will lose someone because of them.

Now he was angry.

"Lauren, what made you appear at Hope's house?" Archie asked her a little rudely but Lauren understood his feelings. Hope had briefly explained to them about Archie while they tried to help Rebecca a second after she appeared then they got attacked and fled.

"I saw a girl bleeding and helped Hope stop the bleeding and I introduced myself. Prior to that I was asleep in my bed having a dream where my brother and I fought with our powers and I won. Next thing I know I'm standing in Hope's living room. As Rebecca's bleeding stopped the door broke down and those things attacked us. That is all I know. I also saw your graduation photos besides the couch and I asked about you and Hope told me you were a Traveler, a kind of witch that can change dimensions when he or she is needed. I didn't have time to say that she was laying because I saw her casting a portal opening spell just then Landon was thrown to the wall and impaled by one of the decorative sticks they had, I grabbed him along with Rebecca we jumped into the portal. That's it. You know I'm a mutant right?" Lauren said to Archie who nodded deep in thoughts.

What had caused their return? Hope had managed to seal the last two keys to Malvore a few months before their graduated. As for the other keys they had found them all and the quest had ended days before he left.

He had lost so many things and he didn't have his books to go back to, to research like he had back there.

They were in ground zero.

Suddenly in his mind went back to a few seconds before his old friends appeared and he was reminded of Betty and Jughead.

Dreading giving explanations about what just happened he turned and faced them only to come face to face with not only Betty and Jug but Veronica too staring at him shocked.

"I can't heal him, I'm far too drained to do that, Archie, can you help?" Rebecca asked shaking him out of his frozen state and just then he found himself having to chose, them or Riverdale gang.

He spent almost a decade with them but his whole life with Riverdale gang…yet he was sure they wouldn't accept him after what he went through both with Veronica's dad and with the supernatural.

He run to Landon's side and he started chanting along with Hope;

"Sana"

"Sana"

"Sana"

The Riverdale gang saw Archie's hands glow a soft orange before the visible wounds on the unknown male's body started healing.

Lauren looked at them and let a thankful laugh out and Archie smiled at her as he stood up and hugged.

"We are going to figure a way out." He promised the girl and she nodded as she hugged him.

"Do you have an idea what causes the timelines crashing?" Hope asked him and he nodded.

"One word, Thanos." Archie said and even Lauren stare at him in shock.

"No! You can't be serious! He is wiping out fifty percent of every planet he is concurring!" Lauren exclaimed in horror and Archie smirked.

"If you haven't notice I was talking about our Thanos, I was talking about a Thanos. I had read somewhere that in Earth 33 he had already wiped the Avengers out. His actions is bound to have a ripple effect to the other earths because of the Einstein's String Theory." Archie started rambling with a happy smile and the Riverdale gang for the first time saw a version of Archie they weren't ready for.

"So?" Lauren asked confused.

"We go back in time and prevent the Avengers from dying and Thanos getting those infinity stones then this reality stops from existing." Archie exclaimed in a duh tone and Landon seat up and looked skeptical.

"Will this help?" He said as he raised his arm and showed them a vortex manipulator he had made himself.

"Yes!" Archie said smirking.

"Then what are we waiting for?" Lauren asked all excited and Archie let a chuckle that sounded alien to the Riverdale gang.

"Well sorry to break that mission impossible aura but what the hell is going Archiekins?" Veronica asked at last and every supernatural being turned to look at her and the Riverdale gang as if they had forgotten they existed.

Ouch...

'Now what?' Archie thought to himself.

So? What did you think? Did you like it? Please tell me in your comments! Also check out my other stories and leave a kind hearted comment! So, what do you think? Do you like this twist in Archie's time away?

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