Out of any videogame enemy, I have never joyously obliterated anyone as much as I gleefully enjoyed annihilating Miriam of the Lord's Believers.
Really? She's the most sane out of all the leaders though.
And for a religious faction she seems to be pretty moderate... especially compared to the planet tentacle lovers.
In the datalinks she disdains her own people as serfs to be used as religious pawns. In the manual which included a backstory of the Unity breaking up and assassination of the Captain, she was painted as nearly clinically insane. Miriam didn't give a shit about the possibility of the remnants of humanity dying a horrible fiery death - it was all God's will. I'll tell you what though, she really believes she's doing god's work. My attitude towards her isn't helped by the fact that she'd declare vendetta on me, University or Gaia, every game for being blasphemers.
Yes, nothing is black and white in the SMAC universe but Miriam really pushes it.
Lal/Peacekeepers is the only guy that can be generally painted as the 'good'/sane guy. He's the one that sacrifices his love so that the Unity could split safely and get all the ungrateful assholes down to Planet. He's constantly jewed by the fact that he has to be the now defunct UN on a new planet.
Also, canon-wise, Dierdre/Gaias brutally crush the Spartans with mindworms, and it's widely believed that Santiago and perhaps Yang had a hand in killing the Captain and sabatoging the mission as they viewed the other factions as too weak.
I seem to remember as the Gaians start Transcendence by merging with the consciousness of Planet, Zhakarov starts losing his shit.
The backstory is actually really cool and I recommend anyone interested to hunt it down.