Aldrin Strykt

Professor Aldrin Strykt was a medical officer onboard the InFECT spacestation. During a busy day at work, he was approached by the Tenth Doctor to treat his companion Heather McCrimmon as she had come down with a retro-photonic virus, which made her invisible. He sent the Doctor to find the organic protein on the planet Mohaga, before becoming the victim of the virus himself, along with all of his colleagues on InFECT. When the Doctor found the protein, he cured everyone on InFECT. (COMIC: The Invisibles)