Those maintenance tunnels are calling Bunny's name. If only had his usual team with him, he could have taken the tunnels with barely an explanation, trusting the other Guardians to anticipate him taking the underground route.

"I'm going under," he announces. He's not thrilled about working with a team he hasn't known for centuries, but he's working with them, and his comfort is less important than rescuing B6. "I can still follow the trail get beneath them without being noticed. Probably get the kids out that way too, if someone gives me a distraction."