The Flea (known as La Cucaracha in the pilot) is a 10-year-old luchador (the youngest and most disgusting of the group). In Lucha School, he was 9 years old. In season 2, he was 11 years old. And in season 3, he was 12 years old. He avoids personal hygiene. He’s not the brightest out of the main three and usually makes bad decisions. He could be described as the troublemaker of the group.
The Flea is described as unhygienic. He can often be nervous but is also helpful to his friends. He usually refers to himself in the third person. Rikochet and Buena Girl are his best friends. Pulguita, who he is initially jealous of, is his younger sister.
(Note: before my edit there was a troll around here. I apologise about the vulgar info you saw before. I was shocked myself. Remember that The Flea’s original name is La Cucaracha! Any racists on this wiki will be prosecuted.)