Marcus Kwiksilver, also known as Kwiksilver the First and Marcus the Warrior, was an ancient High Penguin Warrior and a famous military tactics man that lived in the mid High Penguin Confederacy, about 1011 AD. He showed great determination and bravery in battle. Kwiksilver the First also met his descendant, James Kwiksilver, while battling the dark wraith Nightmare for the first time. This was the result of a time-space paradox and could not be averted.