Young Eli Wirthem swore upon his brother's death that no one else would have to die due to lack of knowledge. Growing up to become a world-renowned scientist, Eli later discovered that his brother's death could have been prevented were it not for a greedy corporation that withheld the cure. Swearing revenge upon corrupt conglomerates everywhere, Eli became the costumed vigilante known as Cardiac.

adjective

of, near, or affecting the heart