#lambeosaurus

This clade's basically a species of hadrosaur-shaped tanker with multiple variants, each specialised for a different cargo, ranging from biofuel (Greenflame) to coolant (Frost) to even plain water (Aqueous). However, they fight the same way: Bulk and spitting liquid cargoes of various types at their enemies. Some of these are more complicated than others: For example, Greenflames transport biofuel, and carry a pizoelectric igniter in the tip of their snouts for igniting the fuel they spit for a stream of flames. It's a bit like that one crank theory about Parasaurolophus breathing fire, but with a robotic para and a legitimate reason for it to breathe fire.

However, the rest of the species merely spit a high-pressure stream of their cargo at someone, which has various results: If you had to rattle one, I would recommend rattling an Aqueous because you're more likely to be pressure-washed than sizzled, frozen or dissolved. It'll still hurt, but it'll be much less dangerous. Unless of course it decides to trample you instead.

However, they would probably not want to spit at you, and prefer to avoid conflict if possible due to how vulnerable all those sacs are, as well as the nerve net in them. Needless to say, one bursting would HURT, so they don't want to get into that state, and are averse to sharp things.

To finish, here is a selection of images showcasing the coats and how they look on each of the featured species.