An enemy that uses unusually powerful physical and magic attacks. Any time it uses focused stance, it will unleash a powerful physical attack with an exceptionally high accuracy rate on the following turn.
Additionally, any time it uses ruthless stance, it will unleash a physical attack that cannot be diverted by any covering effect on the following turn. Needless to say, a dependable means of mitigating damage should be prepared in advance, as should a strategy for dealing with its paralysis and stop effects.
Lastly, be wary of its thunderous meteor magic attack, which it will use each time its HP is lowered by a certain amount.