Jarik Garvus was originally a lieutenant of the 4th "Dread company" after both his arms were blown off he was chosen to be the next intered in a dreadnaught sarcophagus (basically he is not dead yet so he gets to choose a dreadnaught and if were to ever "die" he would be put into the one he chose) so he augmented his redemtor dreadnaught. His main weapon is a combi Macro-plasma Incerator and a heavy onslaught gatling cannon he also has a heavy flamer on his dreadnaught fist and he has two storm bolters and a Icarus rocket pod. during a grussem battle against the death guard he was sliced in half and crushed by a shot down stormraven gunship. after the battle had mostly concluded they found his body in the reck still somehow breathing even with his guts hanging out of his body. The next time he woke up he was in the sarcophagus of his dreadnaught. he has spent the last 60 years in the drednaught sarcophagus in total he is 340 years old.
Thank you @Naireuni for the og model go to this project to see the side view of his gun-https://scratch.mit.edu/projects/1208248793/