MARTY'S LOKI turns on the humans. Sorry to his friends. Not so sorry to any of his "enemies". He's not going to be easy to put down during this event either. Honestly he might have to kick the bucket during this showdown. Feel free to try and stop him. (If you want to kill him, talk to me.)
ORLIN has a proper freakout when he sees Dolores. And double that freakout when she starts killing people. He will (because he's not thinking properly) immediately try to make his way towards her. "DOLORES! DOLORES! WHAT ARE YOU DOING?! WHAT'S WRONG WITH YOU?!" Someone should probably save him from his own stupidity.
OBI-WAN did not turn against the humans, but he senses he's not entirely himself either. It's something he's been mulling over since they arrived. Things just never felt right. He will try to help protect as many people as he can and do his best not to harm any of their Derleth companions who have lost control of their minds.
SPOCK finds this all a little too fascinating. He will also help hide people from the murderous robots.