His design is almost identical to that of Flower, but re-colored so that he would look angrier. He has blue petals and a red, angry-looking face. His arms are curved down, making him look even more aggressive. He is Flower's brother.
Gigantic Flower is a recommended character that was recommended by PSA in The Reveal. It's a gigantic version of Flower that strikes an enraged pose. Nothing more other than that is known about this character.