| Vanguard | |
|---|---|
| Publication information | |
| First appearance | Halcyon Adventures #381, 2017. Rebooted in Fatebreakers #13, 2021 |
| In-story information | |
| Alter ego | Grayson Castleroe |
| Team affiliations | The Firebrands |
| Abilities | Superhuman Strength, Super Resilience, Healing factor |
| Pronouns | he/him |
| Base of operations | Halcyon City |
ACE-05 was altered into a living weapon to combat the rise of a new generation of heroes. But that's not really what "ACE-05" wants. After escaping from the underground laboratory that made him, Grayson is determined to learn what life is like on the surface and define who he wants to be. He's making some friends along the way, going to school, and even using his "gifted" strength and skills for more than just hurting others. He is going to prove to everyone that he can be more than what he was designed for.