Aradia Megido is a character that was part of the twelve Homestuck Trolls. She fights for justice.
Since that, she bears the element of Fire (Along with Nepeta Leijon (Leo) and Equius Zahhak (Sagittarius)).
Also based on her sign, she represents the East. Since that, she decided to make China into a democracy (As China is located directly into the Western Hemisphere).
Like William Furno, they both share the same elements, but he's a machine, and this is a "troll".
Surprisingly, she shares the exact same sign as Iron Man, who is one of the Avengers.
She cringed after watching one of SammyClassicSonicFan's videos, she puked, and more so when she watched videos from Super Minecraft Kid.
The biggest threat she and the other eleven trolls of Homestuck had to face was Bill Cypher or Ultron.