During One of their Battles

Commander Ronan Belleza One of the Second in Command in the Ultramarine Legion Has Accidentally Swallowed by the Portal Again

Leaving him to Fall to the World Of Fantasy World Again

With this He Meets a Group of Adventurers and One in Particular have an Obsession of Killing Goblins

And Due to his Experience with other Galaxy and Universe

He is well Used to this Kind of Situation 

And he is an Ultramarine For they all Bound to Adapt to Any Situation

The Question is, How long will he Gonna Stay in this World Without Communication with the Rest of the Legion?

And Let's Find Out about his Adventure with the Party of Goblin Slayer

As he will become An Adventurer and his Might will be tell of his Achievement

Disclaimer: I Do not Own Warhammer 40k Or Goblin Slayer They are Belong to their Respective Companies

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40k Galaxy

Ronan is Wearing his Aegis Terminator Armor

(Imagined it to be Blue with the Ultramarine Symbol and Blue Cape That have a Red inside with a Golden Ʊ Symbol)

(And Yes It's Aegis Terminator Armor)

This Armor Ronan Use it only in the Thickest of Battles as this Armor is much Thicker Than his own Terminator Armor and He only Use This for any Possible Fighting a Powerful Enemies When he Cannot use his Dreadknight if he cannot use it

This Armor is very Advance itself as Ronan Movement is Not Hinder as if he is Wearing his Power Armor

It Enhances Even Greater Strength, and Speed Than Even the Terminator Armor of the Custodes

This Armor's Durability almost Rivals the Primarch's Armor Only Equaling the Armor of the Captain General of the Custodes Valdor in Terms of Durability as well as Advance systems

This Armor is Very Advance on it's Own as well as Command and Control even able to Contact Ships Even in the Warp, A Very Powerful Shield Protects it, and It has a Self-Repair System

Due to it's Advance Systems, It can also use It's own power to Generate increase Strength and Speed, if the Wearer so wish to Make them Even more Formidable Combat or it's Shield for Enhance Protection,

Just Like any Grey Knight armor it has only Protects the Wearer's from psychic attacks, even if the Wearer is not a Psyker and so they Made it to be one, so even if Ronan is not a Psyker it will still Protect him, as well as.

And Due to Advance Technology, Ronan could still Run like he was in his Power Armor, But Much Faster even without the Need to Enhance it Further

This Armor Can be Wear by Both psyker and Non-Psyker

It was Constructed by the Finest Tech Priest even the Grey Knights Greatest Tech-Marine help for it's Construction, as well Ferrus Manus and the Empress Bless it by Herself to Build This Armor, That is Only Worthy of Heroes and as Ancient as Ronan Himself who have Fought During the Imperium's Infancy in the Great Crusade

Ronan Wields his Sword in his Right and His Powerfist with a Storm Bolter attach to it And the Armor has already Added a 2 Shoulder Mounted Bolter

(And Can act as a Servo Arm so they Could Fire 360 Degree angle so Ronan Will not be attack in his Blind Spot)

As Ronan Knows that they will always Fight their Enemies with their Numbers Before They Could Even Meet the Enemy Commander and Champion in Single Combat and his Power fist has been upgrade and it has a Retractable Claws making it a Lightning Claw and Back to Powerfist anytime when Ronan Want To use it.

Ronan's Sword is not just an ordinary Power sword It is Been Forge By Vulkan and Ferrus Manus with the strongest Metal, Design by Guilliman by making it a Very Balancing to the Master Swordsmen as well as Bless by the Emperor and Magnus the Red Themselves with their Psychic powers Even if Ronan is not a Psyker is it still Effective as a Force Weapons

And so The Sword is a Both a Power Weapon and a Force Weapon

Like the Emperor's Sword that Guilliman Wield... Ronan's Sword Contain the Essence of Psychic Powers of the Emperor and Magnus the Red Themselves, But not to an Extent to the Emperor's Sword

The Swords Power Rivals the Titan sword from the Gray Knights Supreme Grand Master, others Like The Apollonian Spear The weapon Wielded by the Chief Custodian Constantine Valdor

Making it one of the Most Powerful Weapons Like the Titan Sword (Kaldor Driego's Sword) It can Kill Demons Permanently and In Theory Perpetual as well.

He also Brought His Own Plasma Pistol to his Hip

And That is why Ronan is one of the Deadliest Warriors in the Imperium, That is not a Primarch Level and the only People Could Rival Him are the Oldest, and Most Experience, and Decorated Space Marine in Every Legion the likes are Abaddon, Bjorn, Sigismund, Kaldor Draigo and past Supreme Grand Masters, Some Custodes Even Constantine Valdor Who have a Hard Time of Facing him when Ronan is still a Normal Marine and Now Even Much Harder when he Become of one of the First Batch of Primaris Space Marines, ETC

Due to them being the First Successful Primaris Marines the Next Generation of Super Soldiers, But Being the First ones are much more heavily modified than most Space Marines, more so than even the Primaris.

The process made them a Psyker.

The Psychic wards build into their minds granted from the Emperor himself, manifesting as a golden aura that seems to make psychic compulsions have no affect on them, and giving telepaths headaches for trying to read them. Similar those to Meris Astelan and the First 5,000 Space Marine During the Unification Wars

(To Ahriman he Become even more powerful in psychic or any other who is already have a Psychic Powers that have born with it),

(Like their primarchs they could only use this as to Enhance their Physical Abilities or even alter their height to Human Level,

And able to use Forces Weapons even that those only non psykers themselves)

(They Even have Superior Healing Capabilities than the Standard Primaris,

Their Belisarian Furnace Cool down is Decrease and So Making them Even Much Harder To kill. even Without the Other legions Curse)

As well as physically more powerful than even the Already Enhance Primaris, yet still not to the extent of a Primarch,

And it is only Those are the First who have Volunteered to this Test as well as Befits their Status as the Heroes of the imperium

(Well i Read it in the lore from the Alpha Primus who's a prototype of the Primaris Marines and Servant of Cawl and i Removed the said Weakness from the Lore)

For because of this, They are Called the Alphas from their Fellow Brothers

For that, The Emperor Even Made Some of the Custodes Namely Valdor and the Commanders of them, and the 10,000 The So Called Companions Made them to be Even Stronger So they Could Challenge the Alpha Primaris Space marines

But the Primarchs Have Grown to be Even Stronger even More than their Great Crusade Era as Magnus the Reds power Almost Equaling the Emperor in Power when he is not a god

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Ronan Killed another Ork Nod

"Keep Pushing Forward Brother!" Shouted Ronan

Ronan Dodge An Axe to his Head, He Then Punch the Ork killing it

"Oh Shit In Coming!!" Shouted Nath as a large Mob of Ork Nod attack them

"Prepare yourselves Brothers!" Ronan Shouted as his Shoulder Bolters Fire in Full Auto Killing More and More Ork Nodz

"Smashz the Space Marine Boyz!!" Said the Lead Nobz

Ronan Dodge It's Chainsaw He Decapitate the ork

He Feel his Back being attack and Looked at the Ork Attemp to Smash his Chainaxe to him Which he Block it with his Sword then he Punch it 

He unsheathe his Lightning Claw from his Power Fist (Similar to Wolverine Claws when they Appear I Don't know the English Word of it)

He goes full Melee as he Massacre the Entire Ork Nodz His Brothers Joined the Fight as they Keep Pushing Back their Enemies

Ronan saw a Boulder he run towards it and Lift it and Throw it to the Nearest Ork Killing It Instantly

As they Fight 

Suddenly a Portal Appeared in Front of Ronan and Drag him

"Oh No Not this Shit Again" Said Ronan as the Portal Drag him

"And I Thought Terminator is Heavy!!" Said Ronan as he Try in Vain as they Portal Swallow Him

"COMMANDER!!!' Nath Shouted as he Try to Saved Ronan But it was Too Late As Ronan is Being Swallowed by the Portal

"Welp It appears he is now in Another Dimension" said Nath

"Aren't you Worried Chapter Master?" Said One of the Ultramarine

"Why i should be Worried if we are use to this Kind of Adventure?" Said Nath

"Let's Finish this War And Report of our Commander's Disappearance" said Nath as they attack again

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Unknown Loctaion

Ronan Fall from the Ground Hard as it Made Cracks to the Stone

"Crap that was a Hard Fall" said Ronan as he Adjust his Lenses as it Begins to Turn on again

The place is Dark he looks to his Surroundings for a While he saw his sword in the Ground he pick it up.

His  Auto-senses Detects an Unknown Contacts, They are Many as they Run towards him

"Maybe some Security?" Ronan Though "Well it is Really Hard Fall for a Tons of Terminator Armor"

And Not For long his Question is answered  

His Blood Run Boil

"I Have Face Green Skins now Another Greenskins?!" Said Ronan in Anger as he Watch the Gretchins and Some Ork size Gretchins as they looked at him Fearfully

But to Ronan When he looked to those Eyes, Those eyes are Malevolence that they Deserve Death

Without Even Activating his Power Sword

He Run Despite his Size he Run Faster than even a car

It even Give the Goblins a Terrified Looked as they Did not Even See the Likes of him

Let alone a Giant Like Him able to Run is Impossible by their Difinition

He Begun to kill them

He Crush Any Small Goblins that is not a Threat to him

But to those Ork Size are

He swing his Sword and Kill Several Gretchins

Then Punch another and Another

He Cut another Hob into half

He Stomp another Goblin who Try to attack him

Another Goblin Jump as it Try to stab him in the Head But Ronan is Faster as he Catch it with his Power Fist, With a Small Pressure of his Massive Strength he Crush it without any Difficulty

He saw a Grentchin with a Stuff as if Trying to do some psychic attack and he give it no Chance as he Throw a Rock to it Killing it 

After Some Minutes he killed them all

They're are 23 Hob Goblins

and 50 Smaller Goblins

After a Massacre 

He Detected Another Group

He Turned around and Saw 5 People

There's 2 Human 1 Man in his 20s with Armor 1 Girl in her 15s with some Priestess Cloths

A Lizardmen Creature "Hope is not like the Lizardmen i have Encountered" Though Ronan

an Short Elf "Hm a Shorter Eldar" Though Ronan

And Then a Squat or a Dwarf in his Perspective

They have Varied Expression

The Girl Looked at him Fearfully in her Face as she is Shaking at his Mere Presence

While the 4 either looked to him in Awe or Wary as they Ready their Weapon

The Man with Armored begun to say

"That's not a Goblin" He said Simply

To be Continue

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And Done

Now i Made a New Anime Crossover

Ronan is now Throw to the World of Goblin Slayer

How would he Handle it?

Soon he will meet new Friends and Foes

Hope you Enjoy it

See you Next time Folks