Monster with skin so tough it doesn't feel swords.
Toughskins in Final Fantasy Tactics Advance are green turtle-like creatures with a sword sticking out of their backs. They have an extremely high Defense stat, so magic spells, especially those of the Ice element, are highly effective compared to weapon strikes. Toughskins have an even hardier lavender cousin, the Blade Biter.
Toughskins can be very dangerous against physical units with low MP, using their Matra Magic attack to invert HP and MP. To avoid this attack, keep your distance by using long-range bows and magic.