2. Spock (Star Trek; Star Trek: The Next Generation; Star Trek XI)
"...Of my friend, I can only say this... of all the souls I have encountered in my travels, his was the most... human."
- James T. Kirk, 2285
Spock – full name generally considered unpronounceable to Humans – was a Human/Vulcan hybrid who became one of the most distinguished and respected figures in the United Federation of Planets in his lifetime.
As a Starfleet officer in the latter half of the 23rd century, he served aboard the starship USS Enterprise as science officer under Captain Christopher Pike, as first officer and science officer under Captain James T. Kirk, and as the Enterprise's commanding officer during her tenure as a training vessel. In the 24th century, Spock became a celebrated ambassador and adviser to the Federation's leadership. He disappeared in 2387 after saving the Federation from the supernova that destroyed Romulus, causing the creation of the alternate reality.
The extent of Spock's powers and limitations is tied directly to Vulcan physiology, although his ample wisdom (as well as his human half potentially limiting certain physical capabilities) should be considered in full as well.
To that end, let us observe Vulcan physiology briefly:
Vulcans possess a highly efficient respiratory system to extract the oxygen they need from Vulcan's thin atmosphere. They are most comfortable in high temperatures, which is natural given the hot, arid climate of their homeworld.
Vulcan hearing is very sensitive. They possess a superior metabolism to humans (which my personal views on the franchise have led me to believe is only very slightly diminished in the case of the half-human Spock.)
Vulcans are on average three times stronger than humans with considerably superior reflexes. I would feel comfortable stating that Spock's personal abilities are likely closer to twice that of a normal human. It is his considerable intelligence and wisdom that wins him over -- he is a quick thinker with a vast array of knowledge and know-how... in addition to all that muscle.
Unlike most humanoid species, traumatic memories are not only psychologically disturbing to Vulcans, but have physical consequences as well. The Vulcan brain, in reordering neural pathways, can literally lobotomize itself.
This, coupled with the deep-rooted belief that logic trumps all, is often the key to a Vulcan's defeat if no greater physical or suppressing force is available. Psychological warfare can be highly effective against the emotionally purged Vulcan people and Spock, "always a child of two worlds", is no exception. In fact, his emotions are much closer to the surface and can be used against him by the extremely savvy of the universe.
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"There's coffee in that nebula." ~SCP~
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