Here is Nick again looking much better than before and this time here comes his favorite toy dinosaur Murphy! Merry Christmas Eve, guys, as Nick and Murphy have many exciting adventures and explorations to make throughout their years.

Nick by default wears three different attires including his default superhero costume. For his footed pajamas that typically has two white circles on the front:
blue pajama cape, red footed pajamas, two white circles on front (note that sort of design doesn't tend to be generated accurately)

For his regular clothes during the daytime:
red t-shirt, blue shorts with yellow trim, red footwear

Also note that Murphy the dinosaur, if generated alone, may not have his two pieces of hair on his head being displayed, try re-generating if this happens. And if you want the dino to have exactly four legs, you can try, let's say, extra limbs and/or extra legs as a negative tag.

To have Nick and Murphy generated together, I recommend you do some regional prompting.

And to have Nick appear as an evil counterpart like in the episode "The Nightmirror", use these tags in place of his eyes, hair and a number of his clothes tags:
partly shaven spiky blond hair, green sclera, black pupils, fangs, torn turquoise superhero cape, torn white superhero gloves

If any questions, please let me know.

Enjoy!