"Heavy" Monsters
April 4, 2017
15:18
The "Heavy" type, or flag, is a condition present on many enemies and bosses which essentially negates many of the potentially easy-mode ways of defeating bosses.  It does the following:
Negates %-of-HP based damage (Spells such as Gravity, Level 3 Graviga, etc.)
Negates "Reduce HP to critical" effects (Antilixir, Tornado, Whirlpool, etc.)
Negates a large number of instant death effects.  Not all, however - these effects are all coded different and maybe stopped by Death Immunity, Heavy, both, or neither!
Negates Confuse
Causes Odin to perform Gungnir instead of Zantetsuken
Negates instant kills via elemental weakness (Mystic Knights)
As you might expect, it is largely used only on bosses.  It is not, however, present on EVERY boss - I will make a deal of pointing it out when bosses do not have this flag (And you might be surprised which ones don't!). There are also a couple other things that you can do involving Heavy, so when the flag is brought up, this is what it's talking about.