These things are DRGs- they almost always have a "Mamool Ja's Wyvern" with them, which looks like the standard wyverns that players get. Usually between 60-70% health they'll use Spirit Surge, which, among other things, fills their HP back to full.
Other than that, they use your standard Mamool TP attacks: Firespit, Somersault Kick, Warm-Up, etc..