Quake Tentacle	Its most common form of attack is digging its tentacles into the ground and jabbing them up into you from below: Its quite easy to avoid, you simply run off to the far left or right side as soon as the Malboro lifts up its front tentacles.
Bad Breath	Another common attack is its notorious bad breath. In a predictable fashion, it'll rear back its head before dispersing putrid, noxious gas your way: When you see him face you and begin his breath action, hurry off to the other side of the arena and continue attacking if you are able.
Slowga	It has a wide-range Slowga spell: When you see the makings of the spell, get as far away as you can. If you manage to get hit with it, stay back until it wears off.
Curse	If you choose to battle this beast at a distance, it casts curse spells to bring you back in closer. As with any spell, look for the tell-tale sign of the spell underneath your feet and move out of the way.
Suction	Not really an attack, but when it tries to suck you towards its body, it is completely defenseless: Run right up to it and do as much damage as possible while its sucking you in.

Later Cycles: Including stronger enemy cohorts, the Malboro will have the Blizzaga spell added to his repitoire. Its range is far and wide and can be very damaging. Run as soon as you see Blizzaga forming and be sure to come equipped with Frost Mail or a Frost Badge, preferably both.