Mantis will possibly be one of the first people to notice the fire aspect of what's happening, since she is in one of the rooms directly beside Ava's. Since she only sleeps about 3-4 hours a night she'll most likely be awake when the wall between their rooms starts to show signs of fire. This will understandably concern her and she'll be out of the room and looking to warn people that there's a fire happening and they need to evacuate. The only thing I'm having her grab are her cactus and the top part of her uniform, so she's going to be wandering around in her normal green uniform top, no gloves, and polka dot pajama bottoms.

She'll be both confused and mildly panicked so she will just be announcing the fire to anyone she happens to wander past on her way to the 13th floor, because her first thought once she's sure someone (anyone?) is taking charge on the 9th floor will be to find and warn Peter and Gamora what's happening, and make sure they're alright.

Because her room is so close to Ava's I'm planning on having the majority of her room get burnt to a crisp, including her precious disco lamp. She will save her cactus, so feel free to have your characters notice her wandering around with a potted cactus warning people that the building is on fire and they should evacuate.

Once she finds Peter and Gamora she'll be sticking with them for a bit, but eventually will end up outside with wherever those rescued or evacuated are collecting. She will be available to mentally calm or send to sleep anyone who is overly distraught or injured/in pain, so if anyone will need that, she'll be there. Also just a heads up because of the no gloves anyone she touches skin-to-skin will have their feelings examined.

So she will be: 9th floor, stairwells, 13th floor, about with Peter and Gamora, then outside helping people.