Gleam was having a hard time in Oasis when we realized someone was taking advantage of the Umbral Tide's viral infection to take over a city, by wiping their memories with the infection and immediately setting them to work spreading it further. Attacking with 'poison' daggers that had blood from Tide members inside instead to immediately infect the unprotected citizens of Oasis.
And that this person was going to use them as her own personal army to attack The Metal Empire.