Travelling the Interdimensional Space continuum with Emit Rellevart

Dave, Sheep 1, Sheep 2, and Sheep 3 now entered a long corridor, with metal doors lining either side.
Most had small windows covered in bars, and looked like they were used for transporting prisoners far more dangerous than even Humpty Dumpling-eater.
"Hmmm, I wonder what these rooms are for?" Dave asked.
At that, a face appeared at one of the barred windows. The face was green and scaly, like a dragon, with a fang pointing up from the bottom jaw on one side, and two pointing down from the top jaw in the front. The creature had three blood-red eyes, and spoke with a voice of pure evil and malice.
"Hello, there, friendly little creatures. I couldn't help overhearing you asking what these rooms are for. Well, let me tell you. Emit Rellevart built these rooms so that his favourite guests, such as myself, could stay in peace and luxury during our long inter-dimensional trips. Unfortunately for myself, I seem to have mistakenly locked myself into this room. I was wondering if, now that you have arrived, oh friendly little creatures, that you would consider letting me out to stretch my legs."
As the creature spoke these last words, its voice darkened even more, and a low growling began to be audible from it. The words dripped with such evil intent that flowers would have withered from the mere menace that they exuded.
However, this menace failed to register at all on the four searchers.
"Ok," said Dave, and the Sheep nodded in agreement.
"My name is Dave," said Dave, as he approached the door, "And this is Sheep 1, Sheep 2, and Sheep 3. What's your name?"
"Grisly-vile" the creature snarled, speaking such venom that Dave was temporarily driven back by it.
"Oh, that's a nice name," Dave said. "It reminds me of some animals in my dimension named Grizzly Bears. A lot of people are afraid of them, but lots of scientists say that they're just misunderstood, and if you really got to know them, they're not so bad deep down. That's how I like to look at life. There is always a good side to everyone, and no matter how bad a creature might seem, there is always some good deep down insi- gark!"
When Dave had said "Gark!" it was because Grisly-vile had just grabbed him by the throat with one long thin three-clawed hand.
"Get on with it," Grisly-Vile threatened, and dropped Dave to the floor.
By now, the Sheep were beginning to get worried.
"Dave, are you sure this is a good idea?" asked Sheep 3.
"Yeah," said Sheep 2, "He doesn't seem to have very good manners."
"And how is he going to help us find a Renidt anyway?" asked Sheep 1.
"I suppose you're right," Dave admitted, "We should be looking for the Renidt still."
Sensing his ticket out of the holding cell moving away, Grisly-vile tried a different approach.
"Are you looking for a Renidt?" he asked, trying his hardest now to seem non-threatening and helpful (and yet still sounding eviler than many of the lesser levels of hell). "Well, this is your lucky day. It so happens that I am an expert Renidt finder. If you let me out, I can help you find one in no time at all."
The Sheep and Dave processed this information, and then cheered.
"Hooray," Dave said, "We can find Renidt in no time and get it back to Emit before we land in the next dimension. Then he can get it fixed and we can go home."
With that, Dave unlocked the door to Grisly-vile's cell, and the creature burst out into the corridor.