I kinda feel like this scene was intended for UB-02 A ONLY and UB-02 B was going to have a different introduction but they removed it to save time or something.

A looks like it would come out of the sky and immediately try to start a fight but B looks like it would take over a town with its charms and hide in a building with mind controlled people blocking the entrance only for you to somehow lure them away and confront it.