Is legion underage

"Frank Morrison was nineteen and had little to show for it." Word for word from their backstory.

And we know the others are younger than him because everyone at Julie's parties was younger than him.

If by underage, you mean under 21, then yes.

^

Only Frank's age is clearly confirmed, however it's my personal headcanon that Julie is the same age because they're in a relationship and the lore specifies that the people at Julie's party were younger than him (IE Joey and Susie), not Julie herself.

Aside from this we can't say for certain, however, it was commented on by either the devs themselves or just other Fog Whisperers / Content Creators around the time the Stranger Things chapter was speculated as the next chapter release. They said the devs would never select minors (AKA the main cast of the show, so Mike, Lucas, Will, Dustin, Eleven, etc.) to put into the game because it would create bad publicity, having some 14 year olds being brutally cut, beaten, impaled, and murdered isn't a good look even for a horror game. So from this we can basically infer that anyone 17 and under won't be making an appearance in the game, and everyone in the realm of the entity is a (more or less) consenting adult (lol).

Which would mean that Joey and Susie are both 18.

Personally speaking, 19 & 18 aren't exactly what come to mind when I think of the word "underage", so in most cases I would say no except for the only way I could imagine that word applying to them is in terms legal drinking age in the US.

However, (and I think it's kinda obvious where I'm going with this)

Mount Ormond (as far as I'm aware) is in Canada. Where the legal drinking age is eighteen years of age.

So by no metric would any of the members of the Legion be considered "underage".

I think the comments they made about the Stranger things kids only really applied to survivors as they're the only ones who actively get killed and maimed where is The Killers don't.

You are so can't really take drinking into account as Frank is the one who gets alcohol and drugs for them and Frank is 19 meaning you can't really use that as a metric to figure out the ages.

It honestly depends on how accurate you want to consider cosmetic descriptions as this is the closest we actually get to age confirmation on any Legion besides Frank.

We know Frank was held back a year which is why he's older than his Legionnaires.

Both Frank and Julie's uncommon outfits reference them as seniors.

Since we know Frank is 19

This puts Julie at 17 or 18 ( usual age range for seniors not counting being held back or moving up a year)

With Susie we have her basically being stated to be a sophomore.

This realistic puts her around the ages of 15 or 16

As I said in a previous post on here we have no idea when it comes to Joey so so if the question comes down to are the Legion underage.

Frank - no

Julie - maybe

Susie - yes

Joey - Unknown

I want to disagree with your comment on that idea (an opinion shared by @UMCorian ) that the devs comments somehow only apply to the survivors of Dead By Daylight. Until we see a creepy child killer I'll continue to maintain that this statement from the devs operate both ways, simply because there's no real reason to think otherwise. We know that the entity encourages its killers to do its bidding in a variety of ways including torture: mentally, emotionally, and physically. The killers either willingly choose to serve the entity or are forced into it, and we know that the killers who look less human and are more twisted and corrupted are the ones who were tortured most. Though this isn't ever really explicitly visualized, I think the nature of the game and its confirmed lore are enough to make people (and the devs) uneasy about this topic.

I want to make clear that the realm of the entity isn't a nice place for anybody (unless you're an insane serial killer [For example, we know Ghostface is canonically the killer that is closest to straight up enjoying spending his days in the realm of the entity]), survivors or killers. The killers themselves are put through their own hell, again under threat of force and torture if they do anything against the will of the entity. It's also been implied that the Killers never see anyone outside the trials, where the survivors meet each other at the campfire, the killers are forever alone, tormented by their isolation, which potentially fuels their anger, rage, frustration, which then manifests into bloodlust.

So no, I don't think it only applies to survivors, I do think it goes both ways, in which case, that automatically shoots down anyone's arguments about the Legion being any younger than at most 17 years of age. But it's within decent likelihood every character in Dead By Daylight is at least 18 years of age.

As for Frank getting his hands on Drugs and Alcohol but not any of the others, I assume you're referring to Memory 472 from the Legion's Story "Soldiers of Mayhem" in Tome III: Escalation. The quote just states that he should up to the party with gifts, (likely as a show of good faith and courtesy): "Frank shows up with drugs and drinks. Party treats." However, nowhere in the lore does it ever state that it had to be Frank, and that Joey and Susie were incapable of obtaining these products themselves, legally or otherwise. So the implication you make that Frank is the only one who can legally drink and then buys this stuff for the rest of them is purely an assumption.

Also I don't generally consider the cosmetics as truly reliable sources of information, so I'm not exactly swayed by the evidence you brought up. The most reliable cosmetics lore-wise are the ones that actually ship with the tome and are connected to a major story, that would be Bush Party for Julie - the one with the first mask that the Legion wore as a group and Julie wearing a red flannel and hood. It actually does say in the description of the outfit as a whole "Rugged and confident apparel for throwing back a few..." so we know that Julie does drink (confidently too) at the very least, which again, may point to at least her being the most likely of the group to be the same age as Frank.

Although you and I would probably find more common ground saying that she's 18, since this mutually covers both of our theories about Julie at the very least, though again according to my own personal headcanon she's the same age.

Which, again, if everyone is younger than Frank (& Julie) then that would potentially put Susie and Joey at 17, although I do want to mention younger is a subjective term and doesn't actually have to be in years, it could be that everyone is Younger than Frank by a couple of months. Not quite a satisfying answer, but it's still a logical rationale.

P.S. @Volfawott I want to know where exactly you found that Frank was held back a year? I did a bunch of digging and nowhere in the lore is it expressly stated that Frank was held back, not in the introductory lore that the Legion was first shipped with on chapter release, and not with their subsequent story in the archives either. It's something that I just skimmed by at first, but I now realize that if this isn't true it kind of crumbles your entire theory, because that would mean if he wasn't held back a year and is 19 years old he most definitely wouldn't be a senior. And since he's not a senior but the cosmetic is still under the collection name "Fairview Seniors" that does prove the point that cosmetics are unreliable sources of canon information.

I feel like Frank is definitely 19 from the story, I think julie is 17-18, susie 16-17, and Joey 18-19

Well if it helps Frank is definitely legal.

Julie is most likely also legal.

Susie the less about that the better