I think the character everyone's so interested in is Loki. He makes every Marvel movie he's appeared in interesting. Who wouldn't love a trickster?
I mean, since I saw Infinity war, have really being curious about Loki's ending. If really we should be expecting him in the next Avengers. Come to think of it, I don't think Avengers would be interesting without a Loki in it.
So many people have tried explaining his death, some even say he's Hulk, and others argue that the Loki Thanos killed was left handed, Loki's right handed. Recalling what he did in Thor: The Dark World which was the only time he wielded his blade in his left hand when he faked his death and when Thanos kills him.
According to Comicbook.com, having heard all sides argument Loki actor Tom Hiddleston, he spoke about Loki's survival while at ACE Comic-Con last weekend. Saying he was stopped some weeks ago by some guys who were arguing about Loki's death, - bringing the common theory that has being floating around about Loki using his left hand to stab, that there's been a few where he uses his right to stab." He was like, 'Great attention to details."
Hiddleston admitted, he didn't know loki changed his hands, he went on “Your guess is as good as mine.”
It's looking like Loki still has a part to play and he isn't done Avengers, since speculation has it that he's included in the speculated Avengers 4 trailer.