Courtney Whitmore (Earth-1: Pre-Crisis)

"I was there to protect the Spear, and I will continue to protect it until I take my last breath. Because you know that doing the right thing is more important than doing what feels right. You're still a member of the Justice Society. No, I'm not. My heart belongs in Camelot."

- Courtney Whitmore and Amaya Jiwe

Courtney Whitmore was a member of the Justice Society of America under the name Stargirl. After Rip Hunter brought her to 507 to protect the Spear of Destiny, Whitmore started using the name Merlin and became an advisor to King Arthur.

Biography
At some point, Courtney Whitmore joined the Justice Society of America under the name of Stargirl.

Meeting the Legends
In 1945, Whitmore and the JSA faces the Legends after the latter forced Albert Einstein to reveal Mileva Maric's work to the world. The JSA asked the Legends to follow them back to their headquarters for questioning.

Powers

 * Powers via the Cosmic Staff: At some point, Whitmore acquired the Cosmic Staff and possessed exceptional abilities.
 * Flight: When wielding the Cosmic Staff, Whitmore was able to levitate in the air.
 * Stellarkinesis: Whitmore was able to shoot bright energy blasts from the Cosmic Staff, temporarily blinding her opponents.
 * Magic (allegedly): Under multiple sources, Merlin is an expert in the occult and creator of multiple mystical spells. However, it was not known whether said sources were mere myths, or whether Whitmore possessed supernatural abilities while posing as Merlin.

Abilities

 * Hand-to-Hand Combat: As a former member of the Justice Society, Whitmore was shown to be a keen combatant in the field.
 * Staff-Fighting: Whitmore is proficient in fighting in close combat with the Cosmic Staff.

Former Equipment

 * Cosmic Staff: Whitmore's weapon of choice is the powerful Cosmic Staff.
 * Stargirl Suit: When operating as Stargirl, Whitmore wore a blue, white and red protective suit to conceal her identity.