... Metallia can totally act support and have robots standing in important places keeping a look-out for super-heroes / police which can then send warning-signals to her, who could then relay this to the team. Yupp.

She wouldn't see much benefit to robbing a bank, but eh. If the super-powerful entity that promises to end her indirectly if she doesn't follow orders says so.

Edit: She needs to make small scout-bots.