Some bosses are dual-classed?

Yesterday, while doing Aurora Glade, i noticed a yellow glowed Troll boss (warrior) using Troll Unguent. A short while later, while doing Sanctum Cay, i stumbled upon a red glowed Smoke Phantom boss (maybe a Wraith, actually), wich means he's Elementalist. Well guess what... these skills he used: Conjure Lightning, Enervating Charge, Chain Lightning, and... Chaos Storm?!

So i'm wondering, have i never paid that much attention? Has this been changed recently? Bug? Are there more bosses like this?

If anyone knows more about this, i'd like to know.

iv seen that too, but they arent dual classed. Troll unguent is a "troll specialty" (duh), so its a default skill. As for smoke phantoms, they are ele's. Wraiths are mesmers. They look slightly different.

Actually, phantoms and wraiths are ghost that are Mesmer by default, but a smoke phantom is a Elementist, but from the sounds of things you went up against a elemental boss that was a wraith since wraiths have chaos storm as a default and phantoms do not.

According to GWG there is at least 1 boss that's dual classed:

http://www.guildwarsguru.com/content...wail-id704.php

Yes, that's a Phantom, and it is in Sanctum Cay, so it may be the one you ran into.

According to the Prima guide there is an other one of that same type, called Zeki Lament.

Yes and if anyone has SEEN this boss, I'd LOVE to know where that is!