The Urpneys position is all around rather morbid. They are unwilling slaves to the Big Bad Zordrak, who is a demonic Bad Boss of the highest order. Defying or failing him in any form will at best lead to some slapstick punishment, and at worst have you executed in a rather unpleasant fashion (either Taken for Granite or fed to one of his carnivorous beasts), so they are often dragged kicking and screaming into a scheme involving one of his sociopathic right hand man's deranged inventions. The heroes seem aware of all of this, but have No Sympathy, and are usually more than willing to violently fend them off or even exacerbate their situation out of the sheer principal of bothering them (or even just for fun), with the Urpneys usually only awaiting a second nastier punishment when they come back to Viltheed empty handed. The final insult is that most of the crap they suffer is over giving people scary dreams, pretty much every rare victory they earn is tall order Pyrrhic Villainy. The later episodes have some aspects tweaked (likely a result of the writers realizing this and trying to prevent the heroes looking Unintentionally Unsympathetic), Zordrak no longer kills minions while the heroes have a less callous zeal and are put in more legitimate danger, but even then, the dynamic is changed via continuity not retconned, so the Urpneys have still went through all sorts of horror for quite a long duration of time (that is almost impossible to specify since dream makers have apparently existed "when the moon and stars were young"). This is only punctuated by the show depicting in excess how docile and impersonal most of the Urpney army is.
Tying into this, both the pilot and "Return Of The Nightmare Stone" have Zordrak specifically threaten Blob's men with execution if they fail their mission. It is only because the heroes suffer a rare temporary setback that Blob and his men aren't dead.
In "The Statue Collection" it is revealed that Zordrak successfully captured and petrified Pildit the First, ancestor of the current Pildit the Eighth. He has remained a statue in Zordrak's lair for supposed centuries (and inexplicably left unmentioned by the heroes), and likely crumbled to bits along with the multiple Urpney statues in the buffoonery of Blob's men. The current Pildit would have likely faced the same fate in said episode had Rufus and Amberley not witnessed his capture by the Urpneys.
In "The Return", the Dream Maker creates a transport bubble for the Noops out of a butterfly. Even ignoring the creepy Moral Dissonance about this, when they make their way to Viltheed, they exit the bubble and it is left and forgotten about, having likely popped or still stuck in it's non sentient state.