And while Tyrion doesn't manage to get his sister and brother to safety, he is able to unite them as they gasped their last breaths, proving one of his early statements correct. In the second episode of the entire series, "The Kingsroad," Jaime, while discussing Bran's recent "accident," tells Tyrion, "My dear brother, there are times you make me wonder whose side you are on." Tyrion responds: "My dear brother, you wound me, you know how much I love my family."
That remains true to the end. Daenerys' forces capture Jaime, recognizing his false hand, as he tries to get back into King's Landing after having left Brienne in the North. The night before the massacre Tyrion negotiates with a guard in order to visit his brother. (His fumbling Valyrian is the only bit of humor in this grim-as-hell episode.) Tyrion's purpose is both practical and sentimental. He believes that if Jaime can convince Cersei to abandon the conflict, thousands of innocent lives can be saved -- among them Cersei and Jaime's own child. Jaime is resistant, embracing the evil persona he'd been shedding for several years. "You do care for one innocent," Tyrion tells him. "I know you do, but so does Cersei. She has a reason now." He wants them to go to Pentos and start a new life.
Jaime finally relents, but his concern turns to Tyrion and what Daenerys will do if she finds out about his betrayal. It's a risk Tyrion is willing to take. "Tens of thousands of innocent lives -- one not particularly innocent dwarf," he says. "Seems like a fair trade. If it weren't for you I never would have survived my childhood." Jaime retorts, "You would have." But Tyrion shoots back, "You were the only one who didn't treat me like a monster. You were all I had." His actions are for the good of mankind, yes, but they also prove that he wasn't lying all those years ago: He really does love his family.
Of course, he underestimates the full fury of Daenerys' wrath, a wrath he'll likely face if and when she sits on the Iron Throne in the finale. And despite his efforts, Jaime and Cersei have no way of escaping. Jaime would've died from Euron's blows anyway. By the time he makes it to his sister, Drogon has already torched the entire city. They would have died no matter what, but it's somehow kind of sweet that they made it to each other in their final moments. It doesn't exactly fulfill the Valonqar prophecy that said Cersei would die by the hands of a younger sibling, unless you interpret it very loosely -- change the "by" to an "in" and point out that Jaime is technically younger, and you've done it.
It may not be earned, but Game of Thrones still has the potential to surprise. In the penultimate episode, it made the Lannister name a sympathetic one.