The Blue Guardian

Undertale & Rise of the Guardians Crossover

Summary: The Boogeyman has returned and he's stronger than ever. However, there's one tiny problem. He's not alone. Of course the Guardians are there to stop him. But they're not strong enough. A new Guardian is chosen to defeat the beings of fear and determination. But he has given up on fighting.

The TuTORIEL

(A/N): Contains spoilers! I suggest you either go play Undertale or watch Rise of the Guardians before reading.

Undertale belongs to Toby Fox and Rise of the Guardians belongs to William Joyce.

Jack and Toriel entered a room. It had purple bricks, purple tiles, and a door that had the same symbol on Toriel's robe. There were also 6 gray six switches placed on the ground and a lever on the wall."Welcome to your new home, Jack." She said.

"But I have a home." Jack replied, confusedly.

"You need a human soul and a monster soul to leave the Underground, Jack. I'm sure you have neither. So you'll be stuck here for a while, right?"

He understood, but he was an immortal being. Surely it's different for him? Maybe not, since he doesn't have a human soul anymore. And he was definitely not going to murder anyone for their soul. "Alright, then." He shrugged, nonchalantly.

"Allow me to educate you in the operation of the RUINS."

Toriel then walked across two gray switches, turned and walked across two more switches. Then she walked over to the lever and flipped it. The door opened with a slight rumble. "The RUINS are full of puzzles. Ancient fusions between diversions and doorkeys. One must solve them to move from room to room. Please adjust yourself to the sight of them." She explained.

Jack had to admit, puzzles seemed sort of fun. Not that he was ever going to tell Bunnymund that. Then he realized something. "Hey, Toriel?"

"Yes, Jack?" She gained a look of concern.

"Are you giving me a… tuTORIEL?" Jack had a smirk on his face.

Toriel started to laugh, as if she hadn't laughed in days. "Ha ha! Good one, Jack!" She praised.

Once she calmed down, she spoke up again. "What does a skeleton tile his roof with?"

"I don't know… What does he tile his roof with?"

"SHIN-gles." She blurted.

Jack burst out laughing, clutching his stomach with one hand, the other still holding onto his staff. "Hahaha! Good one!" He complimented.

Once he calmed down, Toriel entered the next room, him following her. But now Toriel was less wary of Jack, she warmed up to him. The next room had three switches on the wall, two bridges, and spikes. "To make progress here, you will need to trigger several switches. Do not worry, I have labelled the ones that you need to flip."

Toriel then continued to walk, Jack followed. Jack saw the switch on the wall. It had a couple of yellow arrows pointing towards it. He guessed that he had to flip that one. So he walked over, Toriel pausing her walk to watch him, and flipped it with his empty hand. Once he did, Toriel continued to walk so he followed her. He crossed the mini bridge, seeing two switches and spikes blocking the hallway. One had yellow arrows pointing to it while the other had nothing. He walked over and flipped the first switch while Toriel waited patiently for him. The spikes sunk into the ground, making it safe to walk over. "Splendid! I am proud of you, Jack. Let us move to the next room." She complimented, walking to the next room.

Jack scurried over. The next room was almost completely empty. Though there was a dummy. "As a spirit resembling a human living in the UNDERGROUND, monsters may attack you. You will need to be prepared for this situation."

He frowned, he didn't really want to fight anyone. Unless they were evil like Pitch. "However, worry not! The process is simple. When you encounter a monster, you will enter a FIGHT."

That didn't sound assuring. "While you are in a FIGHT, strike up a friendly conversation."

Really? Talking isn't going to make people stop fighting you. Just look at Pitch. He wasn't much for conversation. Jack sweat dropped. "Stall for time. I will come to resolve the conflict."

He wasn't helpless. "Toriel, I'm not exactly helpless." He objected.

"…You're right. I'm sorry… I'm just…worried." She looked down at the floor, frowning.

"It's alright. No need to worry! I've had worse encounters." He shrugged, nonchalantly.

Toriel looked at Jack, smiling sadly for a second. But then she smiled happily. "Practice talking to the dummy"

Jack looked at the dummy. What would talking to a dummy do to help him? Improve his self-esteem? Toriel stood in front of the exit, watching him eagerly. Okay, time to talk to a dummy. Swallowing his doubt, Jack marched over the dummy. The room darkened, and that same box from before popped up. The dummy reappeared in front of him. His soul became visible once more. Though the box was a bit different.

*You encountered the Dummy.

Jack LV 1000 HP 9000/9000

~FIGHT ACT ITEM MERCY

Jack pressed 'ACT'.

~ *Dummy

He pressed the only option available.

~ *Check *Talk

He pressed 'Talk'.

"So uh, what's up?" Jack said to the dummy.

*It doesn't seem much for conversation.

*TORIEL seems happy with you.

*YOU WON!

*You earned 0 XP and 0 gold.

What was this, some video game? The room brightened up again, Jack's soul disappearing. "Ah, very good!" Toriel was grinning, from ear to ear.

"You are very good."

She then exited the room. Jack took a second to take this all in, then followed. "There is another puzzle in this room…"

"I wonder if you can solve it?"

Toriel walked down the hallway, Jack following. But as they were walking, the hallway suddenly darkened. Jack's soul reappearing. A white frog appeared in front of him. Only its two front feet were visible, with three black dots on its chest. Between its two front feet was what appears to be some small creature with a rounded mouth and eyes that excessively blink.

*Froggit attacks you!

Jack LV 1000 HP 9000/9000

~FIGHT ACT ITEM MERCY

Jack remembering Toriel's lesson, pressed 'ACT'.

~ *Froggit

~ *Check *Compliment *Threat

He pressed 'Compliment'.

"So uh, you have nice eyes." He said, astonished.

*Froggit didn't understand what you said, but was flattered anyway.

Then Toriel appeared, she didn't look happy. The Froggit looked down and slid away.

*YOU WON!

*You earned 0 XP and 0 gold.

The hallway brightened up. Jack continued to follow Toriel down the hallway.

(A/N): Chapter 4 is here! I wrote a lot this time, heh. I actually have 1k words in this chapter. Yes, Jack has a lot of LV because he killed before. Like he brings winter, right? SO the cold used to kill a lot of people back then. Jack is over 300 years old. Plus, blasting those nightmares, counts as killing. They were sentient right?