Workshop

This is much better, a normal, interesting set!

Ultimate. Spark, storm, madness. He puts on a show, disrupting all city and Mafia night actions, except for investigations, as well as killing the Serial Killer.

Only killing?

Features:
1. Strong armor. One natural defense against attacks.
Night Actions:
1. Farming creeps on the lane. He chooses one player – for that night, he is their support. The Knight learns any of the target's statuses of his choice and protects them from being killed.
2. Ganking. Killing the target. If he kills a city member, he loses this night action and his feature. It cannot be redirected.

I think the Town Investigator can be made a little more interesting, of course, considering that a successful kill is a big deal, and if it's the Serial Killer, it's even better. I suggest the following:
Features:
1. Strong armor. One natural defense against attacks.
Night Actions:
1. Farming creeps on the lane. He chooses one player – for that night, he is their support. The Knight learns any of the target's statuses of his choice and protects them from being killed. If no one else comes to the target, he restores his feature (if it was not lost due to the Doppelganger's taunt).
2. Ganking. Killing the target. If successful, he loses his feature. If he kills a city member, he loses this night action. It cannot be redirected.

The winner gets the opportunity to perform an additional night action on the next night (can be different ones).

It's better to get something other than the ultimate and killing night actions. Getting the opportunity for a major twist for winning in a random event is a bit too much.

Ultimate. Treat with a cigarette. Blocks the target for 2 nights and 1 day (the target cannot write or vote on that day).

The block is fine, but after that, it becomes a bit of a letdown. It would be better to simply not count the vote, but not prohibit writing in the thread and voting.

Final Judgment. Fully learns the target's status.

Overpowered. Information is a great power, and the Mafia will abuse it every night. It needs a cooldown or a limited number of uses, or some other way to rework it.

Ultimate. Subjugation. Revives a player who died the previous night or was executed the previous day, of his choice. That player becomes his puppet, and the Doppelganger controls all of their night actions and votes. It does not work on the Mother, Vlad, the Chief Doctor, the Father, and the Hypocrite. The puppet dies on the second night after the ultimate is used.

Can the puppet write in the thread?
1) Yes, redirecting, intimidating, and removing the Serial Killer's protection is not a problem.
2) Maybe, give him a kill as an ultimate, with the ability to bypass natural protection? So that if he figures out the Reaper's status, he can kill him. I just don't want to make the Town Investigator too strong in a small game; I've learned that in that case, he will either kill half of the city members – and the game will end on the third night – or (if the Town Investigator is the Revenger) he will kill the Mafia in two nights – and they will lose uninterestingly.
3) The ability to perform an ultimate + a regular night action under the table is a good boost for city roles like the Mother and the First Love. So, of course, it's random, but it works in both directions. But I'll think about it some more.
4) Yes, but that's why the Reaper has the strongest regular kill among the Mafia (because there are simply more natural protections). But I'll think about it, maybe I'll limit it to one status.
5) Yes, he can. He can even ask to be executed if it's a strong role under the control of the Mafia.