Mary Hamilton (Earth-1: Pre-Crisis)

"With one more saved life, one more cancer-free scan, one more smile because if we can do that every day, together, we can leave this world a better place than how we found it."

- Dr. Mary Hamilton, M.D.

Dr. Mary Hamilton, M.D. was a medical student and the owner of a secret clinic in Gotham City. After finding out about her step-sister's identity as the Batwoman, she joined her and became a member of the Bat Team.

Powers

 * Transformation: After being kidnapped and infected by Poison Ivy, Mary started growing a fascination over plants and developed a rash on her forearm. Her infection then worsened and gave her the abilities of the original Poison Ivy, allowing her to transform into a powerful Metahuman under exposure to sunlight.
 * Chlorokinesis: Mary has the ability to control plants according to her will. She was also able to summon roots of countless plants from the ground and tangle Batwoman with them.
 * Telepathy: Mary is able to command anyone to do anything she orders through eye contact.

Former Powers

 * Healing Blood: Mary was cured from Alice's poison with the Desert Rose, briefly giving her the ability to heal any form of diseases through blood transfusion.

Abilities

 * High-level Intellect: Mary possesses an exceptional intelligence and was able to study complex medical concepts.
 * Medical Knowledge: Mary studied at Gotham University Medical School and learnt different medical knowledge that she utilized to treat patients all over Gotham City.

Current Equipment

 * Poison Ivy Suit: After fully transforming into Poison Ivy, Mary began utilizing a green protective.

Former Equipment

 * Laser Saw: Mary briefly used the Laser Saw in order to rescue Batwoman from a chain of locks.

Trivia

 * Mary owns a Porsche car licensed 2R7-6W5.