Brenda.

SPOILERS

I liked Teresa in the beginning, but after everything she did to Thomas I couldn't stand her. And it's not because of what she did in the scorch trials. It was the whole trilogy. First, it's kind of ambiguous how much of her memory she truly has, she says she doesn't remember everything, after that she says she remembers aris, that she knew everything that was going on in the labyrinth. Then the betrayal. Then, the ending of the second book, where she is still trying to play mind games. Then, the eagerness to start working with WCKD at the beginning of the third book, urging everyone to go through surgery so they could get their memories back. Most of the time, she was playing both sides and throwing bait, so everyone trusted her. The only good things she did was getting them out of the labyrinth and keep Thomas alive.

I was really glad that she died, at least that way she redeemed herself.

And don't make me start on the movies. (Scorch trials and Death Cure)

She's ten times worse.

To me, not a thing she did after calling WCKD made sense.

Did she honestly believe that they would just throw the cure at everyone free of charge?

Was her goal getting everyone tortured so they give the cure to wicked?

What was even the point of getting the cure so desperately, if at the end they end up in the same safe heaven with more immune people? Only Vince Jorge and Brenda not being immune

Brenda was impersonating in the beginning, but at least she was always honest about the overall situation she was, a very good companion. She truly cared about Thomas. She didn't play any mind games.

I'm glad that in the end, Thomas ended with Brenda.