It appears at the top of Mt. Gale where it is responsible for the wind blowing across Windia damaging the Rainbow Bridge machine. In battle with Benjamin and Kaeli, it demonstrates its ability to use Instant Death attacks.
After it is defeated, the wind will stop, allowing the Rainbow Road to be formed between Windia and Pazuzu's Tower.
The Dullahan possesses alternate form it can transform into, the Armodullahan (アーモデュラハン Āmo Dyurahan).