As he, Zakita, and Aroda headed back towards the Toa headquarters, Trelex couldn't stop thinking about what he had just seen. The image of the dead Ba'aru with its abdomen ripped open had ingrained itself in his mind. He thought about who or what may have done it. Perhaps it was another Ba'aru; it was entirely possible that this Ba'aru had gotten into a fight with one of its own and gotten killed as a result. Or maybe it was that four-armed thing that Verau had seen, like Zakita had suggested.

"Trelex, come on, quit worrying about that stupid Ba'aru," Zakita said, snapping the Toa of Electricity out of his pondering. "It's his fault he got himself killed."

"Yeah, Zakita's right," Aroda agreed. "Besides, isn't it a good thing that he's dead? It just makes our job easier, right?"

"You guys don't get it, do you?" Trelex said.

"Seeing as I don't know what 'it' is," Zakita said, "I think it's safe to say, 'no, I don't get it.'"

"I don't either," said Aroda.

Trelex sighed. "What if whatever killed the Ba'aru isn't on our side?"

Zakita and Aroda both looked blank. They looked at Trelex, then at each other. Then Zakita burst into laughter, with Aroda following suit.

"Will the two of you shut up?" Trelex fumed, "This could be a matter of life or death here!"

The two of them calmed down a little. Suddenly Aroda frowned. "Wait, what were we laughing about again?"

Still chuckling, Zakita rapped his knuckles on the Toa of Electricity's head. "Trelex, my friend, I think all that lightning is frying your brain. One of our enemies is dead, and you think the culprit might not be on our side? You're getting paranoid."

Aroda brightened up. "Oh, right, that's what we were laughing about!" he said, grinning widely, and he promptly doubled over and started laughing again.

"Will you cut that out?" Trelex gave Aroda a hard whack on the back of the head. The Toa of Stone was laughing so hard that he didn't notice the warning his Mask of Foresight gave him, and the punch sent him sprawling on the protodermis street. Several Matoran nearby turned their heads to see what was going on.

Aroda got up and rubbed the spot where Trelex's fist had collided with his head. "Ow!" he groaned, "What was that for?"

Zakita stepped between his teammates. "Dude, what's the deal with you? He was just laughing. Are you going all anti-fun on us all of a sudden?"

"No," Trelex insisted, "I just don't think that this is the right time to be goofing off."

More Matoran were beginning to notice the Toa's argument, and they began to crowd around them.

"I like fun as much as the next guy," Trelex continued. "Heck, I used to be the biggest prankster in the entire city! But right now I think we've got something really bad going on here, possibly worse than Makuta Vidaraz! Whatever killed the Ba'aru has gotta be really powerful, right?"

"Obviously. That Ba'aru was totally shredded. So what?"

"What do you think would happen if it suddenly decided to attack Matoran?" Several Matoran in the crowd gasped. They started whispering fearfully amongst themselves.

"Hey, guys?" Aroda interrupted, "Is there such a thing as a bird without wings?"