Since I'm a complete utter fraggot

I know literally nothing about Jack v Martyr so I'll go with your word on that.

Ferrum's biggest strength is weird cyborg stuff and also BS-ing his way out of fights that he realistically has no reason to win, basically the first person I'd expect to pull pocket sand. Adamo's a walking tank, and physically a total monster, but also kind of an idiot. Fight goes two ways, either Adamo just beats Ferrum's head in before he can figure out anything to do, or Ferrum manages to pull a fast one, however considering the fact that Adamo's kinda...Really dumb, I'd maybe give this to Ferrum, he's strong enough to at least hold up for a while against the super beastly guy like Adamo, and Adamo would be one of the easiest person to play dirty and trick, Ferrum will figure some way to get Adamo to toss himself off a cliff, whether or not that'd actually be the kill shot, no one knows, but I'd give Ferrum an advantage. 6/10 wins for him.

Alice and Roy is a weird one, but I'll bet Alice. Roy has really no ranged technique...Like at all, the dude's a cqc beast and could probably floor Alice pretty handily...If he can actually get in the range to do so, given her sniping and her whole metal semblance whatever thing, Roy would have a hard time clearing the distance, as she has a lot of ways to play keep-away. Would give it to Alice maybe 7 out of 10 times, the other 3 for in situations where Roy does get past everything she has, as I don't really see any way she would be keeping up with him in close range, his pre-cog is going to make it hard for Alice to tag him, though. So I think either way, the fight will last a while.

Fight nerd-dom is just my thing, but honestly the idea of bringing it to a forum like this wasn't really a good one, hence why I basically dropped it.

in the end it would BOIL down to whoever could use their resources better. Ellie is reliant upon all the water around her, and (despite what bona said) is not limitless, in fact, all the water vapor in the amphitheater most likely not even be able to fill up a bucket.

However, if it is true she can use all forms of water, if she is in a terrain that is snowy, filled with natural plantlife, or bodies of water, then she would have an advantage. a major one. However, Ellie's advantages comes down to location based.

When water and fire touch, out comes steam, Vex's has many times demonstrated that his raw aura exerted out at a fast pace, can evaporate a (what is basically) a pool- generally the size of a 25 by 25 feet- in a matter of minutes. So, most likely, in any instant his stamina based fire touched Ellie's resource based water, then it would most likely devolve into "the smallest unit of water vapor possible" whilst at the same time, being repelled so that ellie couldn't even make proper use of her resources.

Another advantage that Vex would have over Ellie, is resources. Vex, being a physically peaked adult -despite his handicap- only has to rely on his stamina, whilst Ellie has to use her resources around her.

I won't be going into weapon usage, because I doubt vex's heat repelling from his own body wouldn't be able to give her burns.

A tactic that Ellie could use to fight back vex's fire? Again it comes to resources.

I have stated earlier that Vex's biggest disadvantage would be location based. So let's put him under some different environments:

Desert- ez win for vex no need to explain

Tundra- I have reason to believe Ellie could melt the snow around her into water, and use that to her disposal. However, this means that she would have to be much more mobile than Vex, and willing to change locations instantaneously, so she can gather more ice to convert to water. Vex however could easily counter this, by SCORCHING THE ALREADY BARON FROZEN WASTELAND

Grassland plains (well watered)- similar situation to tundra. Replace frozen baron wasteland, with grass

Forested - If you had watched the episode of avatar the last airbender, where katara learns blood bending, then there was a given quantity of water within every tree where water was harvested from. assuming that the same amount of water would come out, it'd come down to how long vex can survive, whilst competing against a terrain stacked against him. Again, Vex can counter this by starting a forest fire, with NOT ONLY THE FOREST THAT ALREADY EXISTED, but with the DRY WOOD LITTERED FLOORS, RIPE FOR BURNIN, and if ellie doesn't finish this fight within the first few minutes, then she will soon reach a major disadvantage

River - Im not even going to go on about how ellie would be at an advantage

Lake - ^^^^^

Ocean - ^^^^^

Tropical rain forest - tropical rain forests are much more humid than standard forests, it's a given that ellie would most likely win.

Cities - It depends where it is geographically located. Under places like Vale, where its a harbor, then she may be at an advantage, but it also comes down to how far ellie's reach may be when it comes to her semblance, how many miles away is she from the harbor? i doubt she can instantaneously take water from the harbor themselves. Vex himself probably won't have a lot to his disposal

Beacon Academy - Oh boy, do i have something to say about this... Just because... Beacon is hundreds of meters above a lake... does not mean... that she can travel that... toward the school... in a time frame of minutes. It'd most likely take an hour, to even reach that far, whilst still keeping up with the fight, whilst still directing the water she is most likely using at the moment, whilst taking the water from the lake to use at her disposal. This would ultimately boil down to a circumstance in between grassland and city. Like in vale, instead of a harbor, the variable exchanged from beacon to vale, would instead of a harbor, it'd be the pond, and or the lil pools up front at beacon. How far is she away?

Ellie is powerful, water is a formidable force. However, under normal circumstances. she would probably lose just from semblance issues.