Castro has the nickname El Perla (the pearl) because of the famous Black Pearl on his ear (?). The Black Pearl has magic qualities and was forged from the heart of chaos itself. Castro, or El Perla, is a pirate. His crew is feared around the entire Myriad Sea. His flag, which depicts a skull with a black pearl on its tongue, is a symbol of death, and is punishable by law if you have it on you. The red marks on Castros cheeks are symbols of how many Omega Stones he has conquered (4). Castros element is "Shadow", not to be confused with "Lunar". Shadow element runs off the darkness in the users heart, of which Castro essentially has none, but acts like he does. Castro is a caring, bighearted individual but claims to be a heartless plunderer. The Pearl increases his power greatly. Castro is also transgender, being originally Female.

Explanation for the spanish nickname: Castro lives in a country of Nocturnia in which Dustcrithian is spoken, which is Nocturnias variant of Spanish. Castro speaks fluent spanish and Critterish (english) but often mixes in Dustcrithian words.