She joins Stoick and the other vikings in the attack on the dragons' nest, and witnesses Hiccup's victory over the Red Death.
Phlegma has a minor role in the sequel. She appears in the crowd watching the dragon races. She now has her own dragon; a dark gray Gronckle.
School of Dragons
Phlegma was originally planned to be the botanist in the School of Dragons online game, but was replaced with an original character called Flora May. A few months later, Phlegma took her place later.