The day started off as usual in the Ninja HQ, with the team busily going about their morning routines. However, little did they know, Morro had decided to add some ghostly mischief to their day.

As Kai was walking down the hall, he couldn't help but shudder. "Why is it so cold in here?" He wrapped his arms tightly around himself and added, "Did someone mess with the thermostat again?"

Jay was shivering up a storm (no pun intended) as he added, "Yeah, and the lights keep flickering on and off. This place is starting to feel haunted."

Zane, as usual, just decided to calmly analyze the situation. He used his scanners and, moments later, had an answer-"It appears that there are some irregularities with the power and temperature settings."

Nya couldn't help but look annoyed, crossing her arms as she groaned, "I just fixed the thermostat last week. This is getting ridiculous."

In the background, Morro floated invisibly, stifling his laughter as he watched his pranks unfold. He quickly snuck into the control room on ghostly tiptoe and fiddled with the thermostat, turning the temperature down even further. The result was memorable, to say the least-but not at all hilarious for the trembling Ninja, who were all starting to feel like a bunch of overgrown popsicles.

Kai was rubbing his arms furiously as he complained, "This is insane! It's freezing in here!"

Nya was just about fed up with the antics of whoever had had the nerve to do this. Planting her hands on her hips, she yelled, "Alright, who's messing with the thermostat? This isn't funny!"

Just then, the lights went out completely, leaving everyone in pitch darkness. The Ninja groaned and fumbled around, trying to find their way through the pitch-black cloak of darkness seeping into the very air.

Jay, who'd always been the clumsiest of the team, yelped loudly as he tripped over a sharp-cornered box, "Ow! Can't we get some light in here?"

Lloyd, who had remained silent this whole time, finally gave into sheer, raw annoyance. "Morro, stop that right now!" he yelled at the top of his lungs, and he could have been positive that Morro's ghostly form flinched slightly at the words.

A dim light flickered on just in time to reveal Morro floating nearby, sticking out his tongue and blowing a raspberry playfully at Lloyd. Grinning like a Cheshire cat, he snicker-exclaimed, "Oh, come on, Lloyd. Just a bit of harmless fun. You guys need to lighten up!"

The Green Ninja rolled his eyes helplessly and huffed. "You're impossible, Morro. Simply impossible."

Morro chuckled softly, "Guilty as charged. But hey, at least I'm keeping things interesting. Why, without me, your lives would be simply dull, dull, DULL!"

The Ninja, despite their frustration, couldn't help but laugh at Morro's antics. They reset the thermostat and quickly fixed the lights, all while Morro continued to hover around, looking eagerly for his next opportunity to play a prank.

And so, life at the Ninja HQ continued with Morro's mischievous spirit keeping everyone on their toes. It was, of course, all in good fun, and though his pranks could be rather annoying at times, the Ninja knew, deep down, that it was just his own special way of showing brotherly affection.