Things aren't looking good in Attack on Titan: Final Season Part 2. Besides Marley's attack on Shiganshina, Levi's being out of commission, and the looming threat of the Rumbling, there's also the threat of Zeke Yeager's spinal fluid. Anyone who has ingested so much as a drop of it can be turned into a mindless Titan by Zeke's shout. The fluid has been distributed among the military and, by extension, the main cast through wine bottles laced with it. Now several characters can be turned into Titans at any given moment.
In all honesty, most of the people who have drunk the wine, even the high-ranking members of the Eldian military, are nameless soldiers fans won't miss or even remember. There are, however, some named characters that many have gotten to know and love who have been placed at the mercy of Zeke's shout. Here are all of the named characters who have ingested the tainted wine and put themselves at risk of becoming Titans.
Varis
Varis was one of the soldiers assigned under Levi to watch over Zeke. During this time, he and the rest of the soldiers drank their fill of Marleyian wine. Levi was spared because he chose to only drink tea during his watch. As for the rest of his men, Varis included, they were all transformed into Titans by Zeke's shout and turned on Levi. Unfortunately, Levi's hand was forced and he cut down all of his former comrades, Varis included. Varis' role in the story was a minor one, so he might not be missed as much as the others.
Roeg
Roeg isn't especially likable, but he drank the wine, so here he is. He's one of the higher-ranking members of the Military Police Brigade who was given the wine so that he'd be more complacent with Zeke and the Yeagerists demands. Before that, he was notable for drunkenly objecting to not feeding Zeke to Historia immediately. He also chastised the queen for getting pregnant with the child of a random farmer. Both sentiments are shared by many but not often spoken. He also had an annoying habit of running his mouth. If he's turned, he likely won't be missed.
Nile Dok
Nile isn't a particularly influential member of the cast, but he has been around since the first season. Back then, before those living behind the Walls knew anything about the Power of the Titans, he was one of the soldiers who advocated Eren's immediate execution based on the risk he posed. As the commander of the Military Police, he has made frequent appearances throughout the series since then. Like the other high-ranking MP Officers, he, too, drank the wine and now risks becoming a Titan. He's one of the more developed cast members, so seeing him go would be a sad end after all his history.
Dot Pyxis
Pyxis is one of the most important characters to have consumed the wine, but also the most likely. Despite his position as the leader of the Garrison, he had a ridiculous drinking problem that comes up in the story almost as often as he does. This combination of a high rank and alcoholism made him the perfect target for the wine. Despite, his predicament, however, he and everyone else who drank the wine will do everything they can to ensure that Eren and Zeke's plans don't come to fruition. He's a definite fan favorite, so it would be awful if he turned.
Falco Grice
Unlike the others, Falco took in the wine completely by accident. It happened when he and Gabi talk to Niccolo and Gabi bragged about killing Sasha. Niccolo tried to strike her with a wine bottle, but Falco intercepted it. The bottle shattered on his head and some of the wine got in Falco's mouth. An attempt was made to wash out his mouth, but it was too late. When Zeke shouted to turn Varis and the rest of Levi's men into Titans, it can be felt by any out-of-range Eldians who also drank the wine. Falco himself convulsed in his sleep.
