As dark as this show is compared to Last Airbender I'm pretty sure we will lost at least one protagonist. These are just my guesses.

Spoilers for Avatar Book 2, but it's the only way I can explain it: At the start of the season Aang is told by Roku the Avatar Sate is a defense mechanism that uses the power from all his past lives . If he killed in the Avatar State the Cycle will be broken and he will never be reborn. At the end of the season he is…

Bolin's lava plus another giant tornado from Opal,Jinora and the other airbenders just might take down the giant mech.

5. Bolin and Opal/Airbenders destroy the gundam's legs with a lava tornado.

In the Rift Aang learned Spirits can't die, they just take on new forms if one body gives out and usually do something different with their lives in each new form. However, this does not apply to Raava and Vaatu as they are permanently representative of light and darkness. And if an Avatar is killed in the Avatar…

And if she conquers the Republic when Korra's dead the next Avatar will for certain be born in Kuvira's Empire giving her another weapon to raise.

*Lion Turtle sits on the Giant Mech*

We will learn who Zuko's wife is…after he comes back to Republic City and takes a bolt of metal to the chest and says he loves her with his dying breath.

They might do it to show how unfair war is which was a them in Airbender. And it's a bit darkly ironic if Tenzin the guy who wanted to have spirituality but struggled with it for so long was killed by a Spirit Energy weapon.

Confirmed we will learn the ID of both of them.

I guess is Tenzin and maybe one of the twins. A twin death would bring out the fullest impact on Suyin and Jr’s family betrayal plot and Tenzin would be impact as someone whose been on the show since the start, leaving behind a wife and kids, leave Jinora as the only airbending master in the world (just like Tenzin…

And Korra dissolving her Uncle with Spirit Energy.

Not when we still need to know who who Su's father is and the writers promised we'd learn it.

Skrillex is a metalbender. He was bending his sculpture last season. I guess he never got into fighting and just uses it for art.

Read them all, favorite is probably The Search. Arc 4 Smoke & Shadow starts in September 2015.

It was Tahno, the homless guy from S1 and a saleswoman from the first episode all listening to Wu.

The comics will continue so the world is not completely finished at least.

Not if they go for a poetic gut-punch by sparing him then last season in episode 11, only to kill him in *this* episode 11.

We still need toknow who her father is and the writers promised we would, so I think she's OK. My bet is one of the twins and Tenzin.

Tenzin would be impact as someone whose been on the show since the start, leaving behind a wife and kids, leave Jinora as the only airbending master in the world (just like Tenzin was after Aang died) and as Aang’s child that would have an echo effect on the past series. Toph’s grandson is partially responsible for…