Glad P. Plant

The Glad P. Plant (short for Glad Piranha Plant) is an enemy found on Vibe Island in Super Princess Peach.

Unlike regular Piranha Plants, they are yellow and are capable of hopping up, somewhat like Petey Piranha. They also come with the ability to spit fireballs, making them very formidable.

According to the game's Glossary, it "Dances around happily and spits fireballs."