He gets the name of Emerald.

They got back, and Yang asked, "So how did it go?"

"Well guys, we have a bit of a side project going..." Jaune said, and Blake nodded, before explaining.

"... it's risky, but I think we could do a lot of good, so long as we don't get caught," Pyrrha sighed, knowing she was roped in.

"Oh yeah, sounds awesome!" Yang grinned.

"On a more immediate note, I ran into three of the Haven exchange students, only learned the first names of Emerald and Mercury, not the goth chick," he sighed.

"Sustrai and Black respectively," Pyrrha replied. "And the other one would be either Cinder Fall, or Trivia Vanille." Seeing the three staring at her, she shrugged. "What? Glynda told us their names when she mentioned we would get exchange students... I figured Yang and you wouldn't remember, but Blake?" Pyrrha blinked.

"...kinda distracted by the White Fang, remember?" Blake asked.

"Right, fair enough," Pyrrha replied.

"Well, that's perfect, great job Pyrrha!" Jaune grinned, giving her a thumbs up.

"No problem Master!" she smiled.