Reference article
Frank the Fire Duck
The returning Fire Duck is the final opponent of The Flock’s main adventure.
Reaching Frank
Complete the volcano progression and challenge Flowfeather, Snowfeather and Flyfeather. The final contest against Frank is a directly controlled obstacle race.
After victory
Frank can join the flock after the final race. Take him to Drake to resolve their dispute and gain access to 
Drake’s Cave. Defeating Frank does not raise the skill cap.
Fire DuckThe Fire Duck, also known as Frank, is the champion in Duck Life 4 and returns as the final opponent in Duck Life 9: The Flock.