Chapter 4: King Arthur and the Grimm

"I've finally found you, rodent." King Arthur hovers over the Avengers on his magic black horse.

"Yeah, you found us. Now let's see if you can get rid of us too." Sonic homing attacks the King only for him to block all of his attacks. Just then, Ruby and her team came up to attack the King as well, but he dodged each strike they throw at him with extreme precision, almost to the point of making them look like amateurs.

"Hmph. Pathetic." King Arthur grunts, but then becomes intrigued when he glances to the sacred sword Sonic is holding. "Well, well, well. It would seem that you have found the sacred sword. Interesting." He said, finding that interesting.

"We would be glad if you just gave up now if you know what's good for you." Sonic threatened the Dark King with his golden blade.

BGM-Sonic and the Black Knight OST-Fight the Knight (Strings Version)

"Not today, my blue troublemaker. But for now, let us see the power of your so-called sacred sword." He says as he runs away from the heroic teenagers.

"After him!" Ruby commanded as they pursue the King.

They run across the bridge trying to catch up with King Arthur, defeating every single creature from the Underworld that they see, until… "Hmph. It would seem that these minions are no match for you lot. Very well, let me remedy that." He then flies up to the sky as he brings out his sword.

"What does that nutjob plan on doing?" Yang wonders.

'Wait, he's done this before. Before I summoned you five here, he cut through the sky with his sword to bring about his minions to capture me.' Merlina telepathically informs her friends.

"Seriously? So what does he plan on bringing in now?" Weiss questioned.

"Whatever it is, I'm sure we can take them down, no problem." Sonic said, completely confident in their skills.

"Don't be too sure, knave. King Arthur's scabbard possess more abilities than you could imagine." Caliburn told Sonic while still calling him Knave.

"Like what?" Blake asked before the hedgehog could complain.

"Like that." Caliburn directs their attention to King Arthur cutting a big black hole in the sky, with nothing but darkness inside. A few seconds later, familiar dark animal creatures falls right in front of the team.

"Are those what I think they are?" Sonic asked, recognizing the black monsters from another world.

"Uh huh. Yup. Those are Grimm we're seeing." Ruby replied, just as King Arthur lands right next to some Beowolves.

"How do like my new minions? My scabbard seems to tell me that these new creatures should provide you a much better challenge than the ones before." King Arthur said as he continues to ride away from the heroes.

"Eh whatever, it wouldn't be the first time we fought them. At least this makes this trip a little more fun, don't you guys agree?" Yang asked the rest of the group, with all of them yelling "NO!" except for Sonic who is definitely excited.

"I bet I could take all of them in a blink of an eye! Let's go!" Sonic grinned before they take off to fight against King Arthur and his new Grimm minions. While the girls easily dispatch the Grimm with their weapons and Semblance, Sonic clashes his blade with King Arthur's. The two swordsmen swing their swords at one another, grinding their blades for a short while until Sonic jumped up to damage the King directly before he could gallop away once more. "You'll never get away!" Sonic shouted at the retreating king.

"Give it up!" Ruby shouted, giving chase along with the others.

"Pursue me at your own peril, weaklings!" King Arthur taunted them, flinging more Grimm at the girls while Sonic tests his might against him, landing another mighty blow before he runs away.

"Stop running away, coward!" Yang shouts, shooting her energy shotgun bullets at the Dark Knight but they were effortlessly sliced through with his "Deathcalibur" blade and his mocking laugh. After destroying some more Grimm on a grind rail, the Avengers clash with the Dark King once more before finally beating him off his dark horse.

BGM End

BGM-Sonic and the Black Knight OST-A Fool of a Knight

As the heroes pant heavily after a tiring battle with the skilled swordsman, they become stunningly shocked when they notice King Arthur healing his wounds using his scabbard.

"This could go on forever. You sure you're a sacred sword?" Sonic asked the Sacred Caliburn blade.

"It is you, sir, who lacks the proper fighting skills." He retorted, angering Sonic.

The fully healed King jumps back onto his horse and tauntingly scoffs at Sonic, "Ha! A fool of a knight not even worth slaying. Even those friends of yours are much better knights than you."

"Do you see? He thinks so too!" Caliburn agreed with the king about Sonic's pathetic fighting style.

"Well, it's your fault! You're a sad excuse for a teacher! Why can't you be more like Ero?!"Sonic argued, comparing Caliburn to Spider-Man's spider-other, Ero, who sometimes is never so strict or insulting.

"Who?" Caliburn sassly questioned this "Ero" person just as King Arthur scurries away on his horse.

BGM End

BGM-Sonic and the Black Knight OST-Knave the Hedgehog and an Oversized Letter Opener

"Guys, guys, calm down! This is no time to argue! We have to think of some way to beat him." Blake intervened with the arguging hedgehog and his talking sword.

"For as long as he bears that scabbard, we may never be able to defeat King Arthur." Merlina said as she appears right behind them, causing Weiss to jump.

"Stop doing that!" Weiss said, annoyed at Merlina's random appearances.

"Yes. Sorry."

"So what are we gonna do? How can we beat King Arthur when he has that scabbard of his?" Ruby asked.

"We must ask the scabbard's former owner on how to hinder its power." Caliburn answered.

"And who is the scabbard's former owner?" Yang asks.

"Nimue, the Lady of the Lake. The one I mentioned earlier." Merlina responded.

"Oh yeah. You did mention her before, how she was the one who gave King Arthur the scabbard in the first place." Blake said, remembering Merlina's earlier story.

"What are we waiting for? Let's go pay her a little visit." Sonic said, holding Caliburn over his shoulder.

"I fear it may not be as simple as that." Caliburn told the confident hedgehog.

"What do you mean?" Sonic asked, really starting to get annoyed by his talking blade.

"You shall see for yourself. Onward, my young knave." Caliburn insulted him.

"Stop calling me 'knave!' I'm Sonic the Hedgehog!" Sonic exclaimed.

"Very well, then. I shall call you Knave the Hedgehog." Caliburn corrected himself, getting all five girls giggling at the insulting nickname, causing Sonic to sigh in anger.

"Whatever, you oversized letter opener! Now I know how Peter feels." Sonic mumbled, dashing out of the misty lake.

"This is definitely gonna be a fun adventure," Yang smiles, "Hey Sonic, wait for us!" She shouted so the others could actually keep up with him this time.

BGM End

Elsewhere

"I wonder where that Wizard and her friends are." A black hedgehog in knight armor says as he continues to run around a barren wasteland when he hears someone call out his name.

"Lancelot!" He looks up into the sky to see none other than King Arthur himself.

"My King." The dark hedgehog kneels down to his superior. "Do what does my King want me to do?"

"I have a great suspicion that the blue rodent and his friends are going to see Nimue to find a way to defeat me. Go to the Deep Woods and make sure they are dealt with." The corrupted King ordered his trusty knight.

"As you wish, my King." Lancelot nodded, getting up.

"And make sure to bring that apprentice of yours as well." King Arthur added, surprising his trusty knight of such an order.

"My King, are you sure? I'm sure that I alone can handle this problem myself." He argued.

"You can if it was just the blue one. But he has four powerful knights that have defeated those new creatures I told you about. I'm sure with you and your apprentice, you can beat them easily." King Arthur explained his reasons.

"Alright, whatever my King demands I will do." He respectively nodded to his king.

"Excellent. Make sure to tell the other Knights of the Round Table to bring their apprentices too, in case you fail me. And for your sake, I hope you don't." King Arthur ominously warned him before he flies away on his flying horse.

"As you wish, my King." Lancelot agreed and heads off to find his apprentice.

BGM-Sonic X OST-Sonic Drive

Ruby: Hey everyone. My name is Ruby Rose. We're headed to the Deep Woods in hopes of find Nimue, and just when I thought nothing bad would happen along the way, we're confronted by some guy that looks like Shadow. And, who's that standing with him? Who cares. Looks like we're gonna have to fight!

Next time on D-Avengers: Avenging Knights:

Reunion with Old Friends?

Ruby: Do all our friends have counterparts here? Do I have a counterpart of myself?