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who was red x in teen titans

In the original Teen Titans cartoon, Red X was first Robin in disguise, and later a completely unknown thief whose real identity is never revealed on- screen. Even today, there still isn’t an official canon answer to who the second Red X is in the show.

Quick Scoop

  • Red X starts as a secret “villain” persona Robin creates to get close to Slade.
  • Robin abandons the identity, but someone later steals the suit and becomes a new Red X.
  • The second Red X acts like an anti-hero: selfish thief, but with a personal code who sometimes helps the Titans.
  • The show teases his identity but never confirms who is under the mask.

So, who was Red X?

1. The first Red X – confirmed

  • Robin builds the Red X suit using a dangerous power source (Zynothium/Xenothium) to pose as a criminal and trick Slade.
  • The plan backfires, Slade learns it’s Robin, and Robin’s teammates lose trust in him.
  • After this, Robin locks the Red X suit away in Titans Tower, swearing not to use it again.

In other words: the first time Red X appears, it is 100% Robin.

2. The second Red X – mystery identity

Later, someone breaks into Titans Tower, steals the suit, and becomes the new Red X. This Red X:

  • Moves and fights differently from Robin and mocks him like an older, cockier rival.
  • Calls himself a thief “looking out for number one,” but avoids killing and sometimes protects innocents.
  • Flirts with Starfire, fights the Titans, then occasionally teams up with them when it suits him.

Crucially, the show never unmasks him or gives his real name. The mystery is intentional and part of the character’s appeal.

Fan theories and later comics

Because the cartoon never solves it, fans have thrown around a lot of theories:

  • Jason Todd–style “fallen Robin” or edgy vigilante type.
  • Some unknown ex-sidekick or street-level vigilante with a grudge against Robin.

In later DC comics (like Future State: Teen Titans and Teen Titans Academy), DC introduced other versions of Red X , including a young metahuman named Brick Pettirosso as a third Red X, but that’s a different continuity from the original cartoon. Even there, fans note that the answers are teased more than fully, cleanly confirmed.

Fast TL;DR

  • Who was Red X in Teen Titans?
    • First Red X: Robin in disguise.
* Second Red X: **identity never revealed in the show; he’s an anonymous anti-hero who stole the suit.**

Information gathered from public forums or data available on the internet and portrayed here.