This story is not mine, nor have I ever took credit for it. It belongs to SheosMan117 on fanfiction.net.
Description: After Samus's mission on ZDR, she investigates a dimensional anomaly, and gets pulled into a parallel universe, where Earth is being invaded by Hell, and after crash landing, and some demon fighting, meets up with the Doom Slayer. They will work together, to slay the demons, to rip and tear until it is done. After it's done? That's where the REAL fun will begin.
I found this ship unique, but I didn't like how fanfiction.net was formatted so I transported it to wattpad. I didn't read it yet, so don't blame me if it's azz with a double z.
Season 4 of The Virus Within
Trinity is familiar with zombies, being one herself, but when strange zombies start appearing, she realizes that the world she knew might be changing yet again.
When a dangerous set of scientific notes are discovered, Trinity and her friends don't realize anything is wrong until a frantic radio call comes in. Unaware of the notes, they race to the south and struggle to determine where the strange zombies came from. The zombies are unlike any ranks previously seen, and they aren't as predictable. Some have new tricks hidden up sleeves, forcing any Stronghold they encounter to quickly adapt to the new challenge or risk being overrun. Secrets never remain hidden, and zombie apocalypses never make life easy.