Healer (Black Death White Life)

The Healer was an Immunoglobulin general who fought in the constant war against the Macro-viruses on Mimosa 3. During one confornatation with the viruses, they suffered many casualties and it became one of the very few left. The fear that was instilled in it inhibited its abilities, and so it fled the planet.

The creature eventually found its way to Earth to hide. It was found by Father Chadwick Vita, who thought it was an angel, and taken into his care. It healed the sick Father Vita brought to him, and gained the reputation of being a faith healer.

At some point in 1669 it sensed its enemy nearby, but stayed at the church and continued to heal the sick at Father Vita's request. The Doctor came to the church while investigating the apparent outbreak of the Black Death, and immediately realised the healer's origins. He was soon followed by the Macro-viruses, who attacked the Church to destroy him. The Doctor urged the healer to be brave again to save Father Vita and the others, and its powers were restored. It immediately divided and formed an army, which destroyed the viruses. Father Vita asked it to stay with him, but the healer had to leave to fight its war.

The Doctor took it into his TARDIS to heal his companion Martha, and took it to its home planet while the new army followed. He encouraged them to fight and to win. (IDW: Black Death White Life)