In the Croco-Avian wars, Bombombini Gusini betrayed his brother, Bombardiro Crocodilo. He went over to the side of the birds and used his weapons to fight the crocos. Originally, he was unsuccessful, and the birds lost the first war, but upon receiving advanced engines and weaponry he restarted the war and led the birds into a good offensive position, proving himself more successful than Bombardiro Crocodilo. Tralalero Tralala tried to assassinate him but failed. However, when Lirili Larila was killed by Tung Tung Sahur, he reverted to his original state and Bombardiro Crocodilo killed him.