Professor Brown

The old man had a head full of white hair and wrinkles on his face. He had obvious liver spots on the sides of his head, and was likely quite old. Xiao Lin was quite surprised to see it, since the existence of lifewater meant that most of the colonists usually maintained a youthful look. However, this old man looked really old. 

The blond girl with short hair was a stereotypical American beauty, and Xiao Lin was familiar with her. He did not know many Americans, but when the girl waved around her small wand to cast a spell on Xiao Lin, he immediately recognized her as the one who used the spirit chain on Commander Harry and him on the teleportation platform. 

She was once again casting the same spell, but the target seemed to be everyone in the hall. After using the spell a few times, the chains connected him with everyone in the room. He was not very clear on the actual use of the spell, but it was quite useful as an automatic translator.