Why didn't anyone think of killing me?
Um, because you were entirely nondescript in the discussions and convinced us you were innocent? Granted, I had entertained the thought you might be terrorist (Golbat is a Pokémon the evil teams routinely possess!), but in that case the best idea was to leave you alone. If you were actually alien, your strategy was honestly pretty bizarre.
Anyway! I am going to explain Team Vixie, to everyone who is inevitably confused.
On the first day, after I'd accused Vixie, we talked and she spontaneously told me that she was Lucario, who could ask one yes/no question every night so long as it did not directly or indirectly reveal a player's role or alignment. Since I thought this would be something one would be pretty unlikely to just think up, I decided to trust her (after all, I'd told inspectors to inspect her, so I figured I'd find out pretty soon if she was mafia) and told her my role as well.
Later, both of us talked a bit to opaltiger. Naturally, we couldn't trust him; I was leaning more towards his innocence when he claimed doctor to Vixie. Thanks to the Eeveelution doctor thing, she asked what Pokémon he was, and he failed to respond for a suspicious while before claiming to be Chimecho; thus we realized he was actually mafia! However, before I'd fully typed out my "opaltiger is mafia, lynch him" post, he made a proposal of a truce in exchange for information. Since there were two of us, we tentatively agreed, figuring that if he double-crossed us and killed one of us, the other could use the dead one's innocence to gain credibility and formally accuse him, getting him killed.
opaltiger told us about ultraviolet getting channeled by Zuu and thus about Team Galactic originally having been only two members. A bit later, we were also joined by Espeon, an inspector, and thus became a superentity conspiring in secret in the IRC channel #zarota (Slovenian for conspiracy, apparently). We would use opal to kill, have Vixie ask useful questions, I would heal the prominent and thus vulnerable Vixie, and Espeon would inspect the members we found the most suspicious. Meanwhile, Vixie talked with a couple of other players (Kammington and Leafpool), who were not let in on the full extent of the conspiracy (as far as they knew, it was just Vixie and me) but we got to tentatively confirm as probably not mafia.
It was also opaltiger who talked to Dannichu; she approached him, claiming doctor, and I let him assume my identity for the sake of the conversation. Naturally, he asked for her Pokémon, and she claimed Xatu; thus, we realized she was probably also mafia. At this point opal was apparently planning to try to double-cross us with Dannichu's help, but before that could happen, Walker actually decided to make Team Vixie an official alignment in the game: opaltiger would actually win with us instead of us having to kill him off after discovering and offing Team Rocket.
At that point we had already decided opal would kill Midnight (who we found very suspicious), but out of fear for opal's life, we got Leafpool (role-blocker) to block Dannichu. Unfortunately, as it turned out she was the grunt and opal died that night nonetheless. A still greater loss was that some silly doctor had ignored Vixie's explicit instructions to not heal her and overdosed her, eliminating half of Team Vixie in one fell swoop. At least opal's assassination of Midnight had resulted in Dannichu's death as well thanks to their being lovers (this was clear because Dannichu had claimed to have a lover who was a Ditto, which though we didn't know was the game's lover role didn't seem like something one would think of out of the blue over something like Luvdisc).
Thus, I set about the task of finding the remaining mafia member with the wealth of information we had already gathered, by methods I have already explained. And if I failed for some reason, Espeon could take up my mantle and uphold the name of Team Vixie to the end. The end!
But it would totally have been more epic if opal and Vixie had not died (such as if we had redirected my healing upon him instead of Vixie). Then we would have feigned ignorance of the remaining mafia member after killing the last Rocket, picked off the non-Team Vixie innocents, and then laughed evilly as we were reduced to just the four of us. Alas.