Warning: Spoilers ahead for "Game of Thrones" season seven, episode three, "The Queen's Justice."

Bran Stark finally made it home to Winterfell on Sunday's "Game of Thrones" episode, but it wasn't the cheery reunion people might have expected.

Sansa was moved to tears when she realized her little brother was alive and had come home, but Bran Stark is not the boy he was when Sansa saw him last on the first season. He's quiet, reserved, and apparently fine with creeping out his sister by revealing that he's seen the horrors she endured at the hands of Ramsay thanks to his new magical tree powers.

INSIDER spoke with Hempstead Wright (Bran Stark) on the red carpet for the season seven premiere, and learned more about Bran's role going forward.

"He's got this wealth of important information that really needs to get to the right people. And so by the start of season seven, Bran is in many ways a very different character," Hempstead Wright said. "He's the Three-Eyed Raven — he's not Bran Stark, which means he's really just a vehicle for the greater world's fate. That is what Bran's destiny is and what he's doing in season seven."

Isaac Hempstead Wright plays the mysterious Bran Stark/Three-Eyed Raven. Frederick M. Brown/Getty/HBO

His new responsibility might mean shirking the emotional ties he formerly had to his family and friends, including Sansa.

"Bran is the Three-Eyed Raven now, which means a lot of things for him," Hempstead Wright said. "He's now the sworn enemy of the Night King, which is slightly frightening, and he's lost Hodor, he's lost his direwolf — he's very much on his own."

People watching "The Queen's Justice" were seriously wigging out over Bran's new attitude, though.

The greenseeing powers Bran possesses now give him the ability to see into the past and present, and the future. Truthfully, fans don't know much about how Bran's powers work or what his end-goal is, other than disseminating information.

Bran skeeved everyone out in this episode. HBO

"Bran was learning to use his powers all throughout season six and it was going perfectly well," Hempstead Wright said. "And then he totally screwed it all up. We know for a fact he's not ready for this, the old Three-Eyed Raven said to him, 'You're not ready.' And so I think season seven is about Bran having to come to terms with that and use his powers carefully."

Bran's most telling line from "The Queen's Justice" was when he said he needed to speak with Jon. We're hoping Bran is the one who will finally reveal Jon's true parentage (Rhaegar Targaryen and Lyanna Stark), but given Jon's current predicament at Dragonstone who knows when they'll see each other again.

For more clues about what's in store for season seven, head over to our round up of "Game of Thrones" cast interviews from the season seven premiere.