As for how Odin knew about the incident, it was most likely because Heimdall had reported it to him.
Heimdall had probably been keeping watch over Karl's manor for quite some time.
After all, Karl was:
A distinguished guest of Asgard
An extremely powerful being
A close ally of Asgard
If Heimdall saw someone attack Karl's manor, he would naturally report it to Odin immediately.
When Odin observed the hellfire surrounding Steve Rogers and Bucky Barnes, he immediately understood who was responsible.
That was why he came directly to Karl's manor.
Odin then guided Karl through the dimensional layers until they arrived before a dark yellow dimension.
Without hesitation, Odin raised Gungnir.
With a single strike, the dimensional barrier shattered.
The two of them stepped directly inside.
Karl followed behind Odin.
The moment they entered, they saw a terrifying landscape.
The entire dimension was filled with dark yellow flames.
Even the floating planets within the dimension burned with those flames.
The environment resembled the hell described in Western legends.
Ugly monsters with red skin, blue faces, and vicious fangs roamed everywhere.
They looked grotesque and twisted.
Karl narrowed his eyes.
Both he and Odin knew that Mephisto was already aware of their arrival.
Yet he still had not appeared.
The title "Dimensional Lord" sounded impressive.
But in reality, their strength came largely from the dimension they controlled.
Take Dormammu as an example.
Originally, he had been nothing more than a powerful dark sorcerer.
However, he was lucky enough to discover an unclaimed dimension.
After seizing control of it, he became a Dimensional Lord, and his power skyrocketed—from planetary level to the peak Celestial level.
Karl and Odin were different.
Their strength came entirely from themselves.
They had not relied on shortcuts like Dormammu.
However, each path had its advantages.
For example—
If Dormammu successfully devoured Earth, he could evolve his dimension even further.
At that point, his life level and soul would advance to the Single-Universe level.
This was because Earth was known as the Heart of Eternity.
That was also why so many Dimensional Lords, Demons, and Celestial-level entities coveted Earth.
However, dimensional lords were also bound to their own dimensions.
Their strength depended on the growth of their dimension.
If the dimension stopped evolving, their power would stagnate as well.
Most of the time, they couldn't even leave their dimension for long.
If they lost their connection to it, they could even die outside their own realm.
Karl and Odin did not suffer from such limitations.
As long as their life level and soul reached the Single-Universe level, and their power reached Pseudo-Single-Universe level, they would naturally ascend to that level.
True Single-Universe-level Dimensional Lords rarely paid attention to Earth.
Devouring Earth wouldn't benefit them much.
And doing so would almost certainly attract the attention of Eternity.
No being at that level would take such a pointless risk.
Their ultimate goal was to reach the Multiversal level.
Why would they compete with a group of Skyfather-level dimensional lords for a single planet?
Suddenly—
BOOM!
Before Mephisto even appeared, an attack erupted from behind Karl.
It was a sneak attack.
But Mephisto had made a fatal mistake.
If he had attacked Odin, the strike might have worked.
But attacking someone at Pseudo-Single-Universe level?
That was suicide.
Karl didn't even bother dodging.
He simply took the attack head-on.
Then—
The power of the six Infinity Stones condensed into his fist.
Combined with the energy of the Sagittarius Gold Cloth, Karl punched forward.
BOOM!
CRASH!
The impact instantly shattered Mephisto's illusory body.
The shockwave tore through the dimensional layer of the Hell Dimension, creating violent spatial turbulence.
Karl curled his lip in disdain.
Mephisto didn't even dare appear in his true form.
Even within his own dimension, he had tried to attack with an illusion.
Cowardly.
Suddenly—
BANG!
A terrifying presence descended.
A massive figure appeared before Karl and Odin.
A red-skinned demon with two enormous horns.
This was Mephisto's true form within the Hell Dimension.
The moment he appeared, Mephisto attacked immediately.
At the same time, he mobilized the energy of the entire Hell Dimension.
He knew very well that there was no possibility of reconciliation.
The moment his plan to manipulate Karl's family had failed—
Their conflict had become inevitable.
However, Mephisto had underestimated something.
He originally believed Karl was merely a Celestial-level fighter relying on powerful armor.
But now—
Karl had reached Pseudo-Single-Universe level.
And Mephisto had already offended him completely.
There was no way out.
So he chose to strike first.
BOOM!
Odin stepped forward.
Holding Gungnir, he unleashed the full power of the All-Father.
The divine energy surged like a storm.
Even the Hell Dimension itself trembled.
At that moment, many Dimensional Lords noticed something.
Mephisto's Hell Dimension was under attack.
Soon—
Many dimensional beings gathered outside the Hell Dimension's barrier.
They watched the battle with amusement.
Mephisto was infamous among them.
He was cunning, deceitful, and treacherous.
Many dimensional lords had been tricked by him before.
If not for his peak Celestial-level strength, his dimension might have been destroyed long ago.
But now—
Someone had actually invaded his domain.
And it looked like Mephisto was losing.
Naturally, they came to watch the show.
BOOM!
BOOM!
Karl observed the battle quietly.
He finally realized something.
Odin was far stronger than he had expected.
The All-Father pursued Mephisto relentlessly.
Every strike of Gungnir shattered entire planets within the Hell Dimension.
Odin's divine power was approaching the Pseudo-Single-Universe level.
Karl couldn't help but admire him.
Odin truly deserved the title of God-King of the Nine Realms.
Suddenly—
BANG!
ROOOAR!
Mephisto roared toward the sky.
The entire Hell Dimension shook violently.
All the energy within the dimension rushed toward him.
He absorbed it without hesitation.
His power began to rise rapidly.
Soon, it was approaching Odin's level.
Karl was just about to intervene—
But Odin acted first.
He hurled Gungnir toward Mephisto.
The spear carried the majority of Odin's divine power.
It flew directly toward Mephisto's heart.
Mephisto attempted to dodge.
But Gungnir was a causal weapon.
Once thrown—
It was guaranteed to hit its target.
No matter where Mephisto tried to hide, the spear followed him relentlessly.
In the end, Mephisto had no choice but to use the energy he had just absorbed to defend himself.
BOOM!
But his strength was still inferior to Odin's.
Gungnir pierced directly through Mephisto's heart.
However—
He did not die.
As long as Mephisto remained inside his own dimension, he could resurrect endlessly.
Unless someone destroyed the entire Hell Dimension, he could never truly be killed.
But every resurrection consumed energy from the dimension.
Once the Hell Dimension's energy was exhausted—
Mephisto would lose the ability to resurrect.
And that would be the moment of his true death.
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