Mecha404 eventually would land in the Au known as "HorrorTale". Mecha404 walked and looked for signs of Infected. He used his scanners to search the place in which it found traces of Infected's power still remaining. 

"Hey buddy" said a voice behind Mecha404

"Don't you know how to greet a new- woah wait a second. Just what the hell are you?" asked the voice as Mecha404 turned to see it was Horror!Sans. Mecha404 then scanned Horror!Sans who freaked at the weird light being shined on him.

"[Sans#48890 alias "Horror". Magic capabilities....dismal.]" Mecha404 said as it then turned around and began to walk into the woods leaving Horror confused. Mecha404 walked through the woods of HorrorTale and as he did he saw claw marks and writings on trees the deeper he went until he finally ended up at a tree that had been written on so much that it hardly seemed like a tree and more like an artistic disaster.

"[No sighs of subject "Infected". Recalibrating approach.]" Mecha404 said, however the very next moment an axe went flying by his head before he caught it. Mecha404 looked at the axe and then looked in the direction of which is thrown only to see Infected leaning against a tree.

"Well well, Look what the asian cat dragged in. A giant pile of tint and bolts." Infected snickered

"[Subject "Infected" found, proceeding capture protocol.]" Mecha404 said as it then flew at Infected at light speed to which Infected casually dodges.

"Whoops." Infected said as Mecha404 stopped on a dime and flew back to Infected only for him to dodge him again. Infected began to laugh hysterically only for Mecha404 to stop again and turn his head.

"[Increasing speed.]" Mecha404 said as he was bounds faster than before and blitzed straight at Infected, so fast Infected saw Mecha404 as a blur.

"Uh oh." Infected said as he was tackled and then thrown into a tree. Infected then sent a horde of wisp at Mecha404 who turned his arms into cannons and shot every single one of them causing massive explosions in the woods. Infected swatted away the smoke only for Mecha404 to punch Infected's clean off his shoulders. Mecha404 watched it fall.

"HehehehAHAHAHAHAHA! Oh shit is getting good now!" Infected shouted with joy as then his body exploded sending Mecha404 flying backwards. He would then stop himself as he watched the wisp fuse together with Infected's remaining bits to completely reform him back to normal.

"Speechless huh? Good shit I know! This stuff really does the trick. My black blood works wonders again-" however Infected would get cut off as Mecha404 punched him in the face.

"ARGH!! DICKHEAD! HAVEN'T YOU EVER SEEN ANIME!? YOUR SUPPOUSED TO LET ME FINISH TALKING AND THEN-" But Mecha404 continued to beat down on Infected not giving him an edge, Infected then tried to battle back, but every punch he threw Mecha404 dodged it and then dished out his own. Mecha404 then uppercut Infected before grabbing his head and smashing it into the ground. Infected dodged a stomp attack from Mecha404 before getting himself up only to be punched to the ground again by Mecha404. Infected jumped up and wrapped his legs around Mecha404's head as he then began to punch it. Mecha404 stood up tall and turned it's arms into machine gun like turrets and fired them at Infected's head turning it into swish cheese. Infected then went limp as Mecha404 then grabbed both sides of his waist and the pushed him off.

"[Your efforts for victory are slim. Your actions are irrelevant. I have been given your battle data, your combative skills and your many fighting styles. There is nothing you can do to surprise me.]" Mecha404 said as he then stepped on Infected's chest. Infected groaned as he weakly grabbed at Mecha404's leg.

"Y-You aren't going to beat me while monologuing." Infected groaned

"[Asset taken down, returning back to HQ.]" Mecha404 said as he then stomped on Infected's face knocking him out.

On the other side of the multiverse 404 and his crew landed inside of a dead au.

"Is this it? Where is everyone?" Error asked, 404 took a knee down and grabbed the core code of the AU to which he then pulled apart to look at the inner workings of this universe. He then was able to read who was and hasn't been here and also see everything about them.

"What have you found my lord?" Nightmare said as he slithered over to 404 who continued to stare at the information he had found. 404 watched as he saw in a playback of time only for his eyes, he saw Ink and an unknown individual. 404s eyes looked harder as he saw the individual and their characteristics. 

"Why can't I read you." 404 whispered

"What?" Nightmare asked

"I can't read the code of the person in this moment of time. That should be impossible. Either that or I haven't studied their code before. I'll need to look further into this. I need to go deeper into this and study the deepest parts of this multiverse. Having individuals who have code and aren't coded not within my palm can't be allowed." 404 said as he then created new clothes for himself and then proceeded to walk away.

"My lord where are you going?" Nightmare said as Error also walked over curious. 404 then looked as Error walked past and then looked down a hill.

"I need to go for a bit, while I would like to revive my home...I can't do that if the possibility of a rouge force existing and going against me is present. See you guys around." 404 said before he then shrank the entire dead universe into the size of a small ball and crushed it into pieces. 404 then teleported back to HQ and then looked down into the mainframe pool. He then jumped into it. He looked around as the mainframe reacted to him extremely until it calmed down as Loading's face appeared. 

"Now what would someone like you want?" Loading asked

"I'm here to understand why and how there are beings still here I can't comprehend? I just discovered a sans with code I can't read. Why is that?" 404 asked as Loadin's eye looked at him from all around.

"Why should I assist you? I'm plotting on killing you as we speak, yet you've done me the pleasure of coming right to me. Within this pool vacant of dimensions and feeble concepts your nothing. How shall I destroy you I wonder." Loading said

"How about we settle it with a fight, I win and you teach me to see all types of code within the multiverse." 404 said

"Annnd what do I get when I win?" Loading asked as multiple different faces popped up all around 404.

"You get me, you get to finish what your job and no longer worry about some nobody treating the mainframe's power like a toy." 404 said as Loading's eye then looked deeper into who 404 truly is and sensed he was telling the truth.

"Hmmm, Alright William. You have a deal. However how would a creature such as yourself fair against me? Me a being beyond everything that makes this multiverse what it is, me a being that even now has a form and shape so far beyond you that you would find yourself dumbfounded by my cosmic otherness. You want to fight me?" Loading said as 404 then summoned forth his Just!404 transformation by mistake trying to turn into his butterfly one.

"Yes"J!404 said with a smile

"Hehehe, How in the multiverse do you plane to touch much less harm a multidimensional being like myself who doesn't need a physical body or anything to attack you? Hell! I'm not even on your plane of existence William! How will you win here!?" Loading chuckled as he asked

"Guess we'll find out, but I'm not going back empty handed." J!404 said.