FusionDex

Duspert submerges itself in swamps save for its head, appearing to be nothing more than a skull upon the ground. Hapless travelers that wander too close may be grabbed and dragged beneath the muck.

If it senses the approach of a storm and a tidal wave, it protects its seaside nest by piling up boulders. A glare from its single scarlet eye makes even burly grown-ups freeze in utter fear.