|First appearance||Keroro Land Volume 5|
|Species / Type||Keronian|
Firuru is a sports doctor and the leader of Sporty.
Firuru is a dark blue, blue-eyed, soccer-loving Keronian. He wears bright green shoes and a bandana on his head that partially covers his eyes. He keeps a piece of tape or bandage across his nose. The symbol on his belly is a white star inside of a yellow circle. On his bandana, the symbol is the same with the colors switched. He is often seen carrying a white soccer ball with yellow stars on it.
Firuru's special move is called the Overhead Kick.
Firuru's name most likely comes from the Japanese of field, fīrudo (フィールド). For this reason, his name can be spelled as Fielulu.