Yes, obviously if they don't get Doctor Disaster back at some point, some other Spark will march in with an army and take over the city of Little Damar.

Though it's not that unlikely that, even if they do nothing, Doctor Disaster will charm one of Professor Predicament's lieutenants with his sheer earnest good-naturedness and show up back at the Castle of Disaster with a new lieutenant in tow.

Yes, obviously if they don't get Doctor Disaster back at some point, some other Spark will march in with an army and take over the city of Little Damar.

Though it's not that unlikely that, even if they do nothing, Doctor Disaster will charm one of Professor Predicament's lieutenants with his sheer earnest good-naturedness and show up back at the Castle of Disaster with a new lieutenant in tow.