Ves and the others decided to continue forward. While it was a bit worrisome that an unknown crew was trying to activate the biomechs, they weren't necessarily enemies.
From the way they moved and how they interacted with the entrance and the various devices in the hall, they were probably authorized personnel.
Vincent made a surprisingly insightful comment. "The unknowns are likely employed by Ruuzon Arena or one of the competitive teams that regularly compete here. In fact, I think it's the latter. Notice how every biomech is different? I think they're all units prepared for team matches."
The others studied the details pointed out by Vincent and agreed with him. The group of unknowns consisted of both mech pilots and mech technicians and possibly other personnel.