Note:This takes place right after infinity war and feature an alternate timeline where the Doom Slayer was awaken due to the snap and he will aid the avengers of their battle aganist thanos,hope you enjoy this!

Earth 616,Avengers HQ

All hope is lost,Thanos has successfully finished his dreams of balancing the universe and half of all life has vanished and Tony Stark is lost in space.The remaining Avengers is tracking Tony and wanted to bring the people back.Fortunately,the tracker found in Nick Fury succesfully contacted Captain Marvel and she bought Tony back.

Meanwhile in Mars...

Due to the power released in the snap,the Doom Slayer came to an awenking and he saw three Possessed heading towards him,the slayer saw a UAC pistol nearby and the next thing he knew,he was shooting the three demons,but suddenly,the remaining one Possesed was reduced to ashes.The slayer was certeinly confused but he just keep on going and there,he found his godlike armor,the Praetor suit and he found a combat shotgun,he opened the door and saw an imp roaring in fear as the slayer returned,but all of a sudden,the imp vaquished into ashes and the slayer was angry that he can't do his usual ripping and tearing due to whather reason and he saw a communcation device and he saw the message that Tony Stark left while he was stranded in space and he learned of the snap that the mad titan Thanos that changed the world forever.Just then he heard a message left by Dr Samual Hayden;

'Welcome,Doom Slayer,'said the cyborg,'As you can see,the world is in distress right now due to an energy surge at Earth that wiped out half of all species,including demons.'And then the monitors in the rooms display the situation when the snap happened from major cities on Earth including New York and Londen,to the UAC facilities in Mars,even to the plains of hell.

'As of right now,we have a bigger threat to deal with,and that threat is Thanos.There's an armory nearby,so make yourself useful,once you are done,there a ship nearby that is auto pilot to Earth.'

In the armory,the Doom slayer found himself some nice weapons,and he packed a Super shotgun,a Heavy assault rifle with micro missiles, a UAC standard Plasma Rifle, a Gauss canon and a Rocket launcher with lock on,a chaingun,a chainsaw,and finally,the BFG 9000 and he put all of his weapons in his warp pack and he boarded the shuttle to Earth.

Authors notes:And so the Doom slayer has went to Earth to meet the Avengers and find Thanos to pay for what he's done!This is my first ever fanfic,so yay or nay?please review.