It would be hard to not recognize that booming voice. Frisk turns around towards Reinhardt, and smiles before hopping up to their feet and running over--quite the change from their shy demeanor of late.

"Reinhardt!" They giggle as they run into him and hug him right around the waist--not that someone as small as Frisk is could hope to budge this mountain of a man. "What're you doin' here?"