A member of the Legion of Super-Heroes.

Troy Stewart of Earth is the real name of the hero Tyroc. Troy was born on the island of Marzal which, though on Earth, exists in another dimension and only appears occasionally on Earth. Troy was born with abilities based on his voice, which he used as the protector of Marzal.

When Marzal shifted into Earth's dimension, Troy or Tyroc as he was called met and helped the Legion of Super-Heroes. Tyroc was a member for a short while, but returned to Marzal when it shifted dimensions again.


Now for a bit of unasked commentary: The Tyroc character was a attempt to make the Legion of Super-Heroes intergrated. A noble idea, but unfortunately, the character was extremely weak and so the whole idea comes off as a bad case of tokenism.