Waterway
The beast observed him with unreadable eyes. Yang observed it too: low stance, reptilian, tough scales, meat-ripping teeth, powerful muscles. For a moment, it was still. This monster was an animal, wanting to defend its territory. Yang was about to tell the others that if they put this crocodile and others like it to sleep, they could possibly get through here without trouble.
And then a voice came through the air, something understandable and yet inhuman. "Cagnazzo compels you…"
At that, a glint of madness appeared in the crocodile's eyes. It lunged at him, forcing Yang to leap up and onto the creature's back. The crocodile then jerked again, trying to knock him off balance. Instead, Yang dropped down, grabbing it behind its front legs. It struggled, but he flipped with it, leaving it to struggle in the air. Then he tossed it into one of the waterway's walls, stunning it briefly.
A jolt of electricity shot through the crocodile, knocking it out. "Hey man, we can't help you if you're that close to the monster!" Palom called out.
Yang got back onto his feet. "These creatures are animals driven mad by some power," he said. "We ought to avoid killing them if possible. Tellah, who is Cagnazzo?" Even though the old Sage was a bit forgetful, perhaps he knew. Yang would count on him knowing more than the two children, even if they were talented.
"I heard the voice too," Tellah said, running his fingers along his beard. "Cagnazzo… it is the Fiend of Water, a devil who commands monsters and wild animals. And we've encountered Milon too. If the four Fiends are back in the world, that explains why these days are more dangerous than before. Then the question becomes, who unsealed them and why?"
Yeah, there's nearly no discussion of the four Fiends in the game, except maybe in the last parts. If this was a later FF game, I'm sure their presence would get discussion, even just a few lines.
And Yang vs crocodile is awesome.