Malohkeh

Malohkeh was a male Silurian scientist.

Hibernation
Malohkeh and the father of a girl called Kaya were good friends, and he helped his daughter into hibernation. (NSA: The Little Planet)

Meeting the Doctor
Malohkeh's family had been studying the "apes" for centuries and he was fascinated by their evolution. He would dissect adult humans while they were still alive, but would take only samples from children. He dissected Mo Northover but before he could dissect Amy Pond, he was interrupted by an emergency as the Eleventh Doctor and Nasreen Chaudhry had been captured.

He tried to decontaminate the Doctor but since he was not human, it harmed him. Malokeh stopped it, much to Restac's dismay. He awoke Eldane from stasis and brought him to stop Restac and the other Silurian soldiers from killing the humans and the Doctor when he saw that Restac was going to far as "protector" of the city.

He released Mo's son, Elliot, who had been captured in The Hungry Earth, from suspended animation as a gesture of peace, earning himself the Doctor's friendship as he only wished to learn more about humanity (despite his methods). However, much to his horror, he soon found Restac waking more of her warriors to wage unneeded war against humanity. Malohkeh was shot and killed by Restac before he could do anything to warn  the Doctor of her threat. (DW: Cold Blood)

Alternate timeline
In a world where all of history occured at once because River Song did not kill the Doctor, Malokeh was the physician of Holy Roman Emperor, Winston Churchill. (DW: The Wedding of River Song)

Personality
Malohkeh was devoted to his work as a scientist and was fascinated by the human race. He originally saw humans as little more than an interesting type of animal and was willing to dissect adults while they were conscious. Although he was willing to slice open adult humans, he only took samples from children. Despite dissecting humans, Malohkeh didn't seem to be a sadistic person. As humans were, from his point of view, animals, he seemed unable to understand that they could feel pain.

As time went on, however, Malohkeh realised that humanity had evolved into an intelligent species. After realising this, he became an ally of the Doctor and wanted to bring peace between humans and Silurians.

Malohkeh shared an antagonistic relationship with Restac, who eventually killed him. (DW: Cold Blood)