XIII raised his eyebrows when Twain informed them that there were people here that weren't from Earth. He felt somewhat safer than he was moments ago, but he was still cautious. He took a drink from his coffee and looked around the room. XIII noticed that the old man looked like he was having a panic attack. Soon after, he left, puked in the hallway, and passed out. Twain and a few others left to go help the man, XIII included. When the man was placed on a bed, XIII watched as Twain laid his hand over the man's face, and leaned in when Twain frowned and stopped talking. 

When XIII saw the frost forming on the old man, he frowned. He stepped forward and laid the back of his hand on the man's forehead, and pulled it back quickly when he felt how cold he was. XIII grabbed a nearby chair and sat down right by the bed. He leaned forward held his hands out as if he was trying to heat himself up by a fire. Slowly, the air around the Twain and old man started to heat up. Rising gently until it was nearly uncomfortably warm, but not warm enough to cause harm.