So who is the third biotic?

Jaal?

Jaal makes sense if he's sort of like Javik, using a power that's like a biotic, but different, but wouldn't he be an Infiltrator?

I think he would have to have tech skills to qualify as an infiltrator. I kinda like the idea of a ranged biotic with a sniper rifle. Thane is pretty much the only one we had in the OT.

It's entirely possible that we'll have no more biotics, a seventh companion or even - dare I say it - a dlc biotic character.

We're pretty sure Peebee has tech powers, so that would make her our Sentinel, wouldn't it? Vetra's modified assault rifle and power armor would lean me toward Infiltrator, and Liam would be our Engineer by default and background. Maybe Jaal's a pure biotic sniper like Thane, but I dunno if that fits what we've seen of him. I'm still not one hundred percent convinced our seventh squad member was cut, and this definitely gives me a reason to stick with that - could be we can't figure out the Adept because we haven't met them yet. I mean, I guess it's possible they had an adept but cut them and didn't bother to shift the other roles around to accommodate, but that seems kind of unlikely.

I don't buy that Cora and Peebee are our only two biotics, though - if one of them was a pure biotic, sure, but as is the party balance is way off. Gotta be something else we're not seeing yet.

Wait, Eezo is prevalent in the Helius Cluster? Is this confirmed or just an assumption?

According to the character descriptions on the official site Vetra has tech armor... so she's likely a sentinel. On that basis I'd say it's a good bet she has biotic and tech powers.

Jaal is probably an Infiltrator as non of the other characters look capable of that. Liam has Havoc strike which is not exactly a good fit with Tactical Cloak or Sniper Rifles. PeaBee has Invasion which is a tech power.

On Nyreen Kandros we've only have 1 single Turian female in the original series and the fact she was a sentinel with a biotic power is less lazy more of a coincidence. I don't really mind what they give her. Personally I'd quite like her to be a Cabal with Poison strike but that might be too similar to Liam and Cora.

Possibly Drack?

Soldier - Liam
Infiltrator - Jaal*
Engineer - Vetra
Sentinel - Drack (warlord sentinel)
Adept - Peebee (Invasion aside)
Vanguard - Cora

*

Uh... yeah, I was just... testing you...!

Curious to see how they handle the biotics in that sense. I don't mind either way TBH, as long as their logic is reasonabl.

I've seen people have this issue before and I don't get it. Eezo is the most potent resource in Mass Effect lore. Not only would andromedan's want to harness that power but any alien race that grew up around it would have biotics (asari). Also without andromedan's using biotics it would make our own biotics weaker by proxy. If all the andromedan's are running around with shields instead of barriers it would be pointless to use biotics.

Good question ProbeAway . I've been trying to nail down which character fits in which class archetype for a couple of weeks now. I believe the devs said that the traditional classes would be represented by the NPC's in ME:A. However, my guess is that they are going to have a spin on the class paradigm to make them a little more... unique and less traditional. Here's what I've got:

Liam: Engineer (based on his background)
Cora: Vanguard (adepts don't charge)
PeeBee: Adept/Sentinel (Invasion is a tech power but she has no "armor" per se... hmmm)
Drack: Solider (but fire based)
Vetra: Solider/Sentinel (Power Armor is like Fortification, but another solider?? Maybe more Sentinel like which means she needs some sort of biotics? I dunno...)
Jaal: Infiltrator (biotic based like Thane)

Perhaps there is/will be a 7th character (secret or DLC) to represent the new "Explorer" class. Or one of the above does already.