Spock - full generally considered unpronounceable Humans - a male Human/ Vulcan hybrid lived the 23rd 24th centuries, became of most distinguished respected figures the United Federation Planets.
He appeared the original Star Trek series serving aboard starship USS Enterprise science officer first officer (and Kirk's second-in-command) later commanding officer the vessel.
Spock appeared all 80 episodes the original Star Trek, embodying Vulcan culture logic all else. Vulcans featured Star Trek: Next Generation, essential the series the United Federation Planets.
Star Trek: Discovery its Spin-Off Star Trek: Strange Worlds, are prequels TOS feature younger Spock (played Ethan Peck). older Nimoy version (from TNG guest spot) appears briefly archive footage.
As arguably two famous Star Trek characters, Kirk Spock's friendship stood test time. they vastly personalities, differences complement another, they bring the in other.
After Captain Christopher Pike (Sean Kenney) critically injured a training accident, Spock commandeers USS Enterprise sets course Talos IV, forbidden planet and Pike visited years earlier.
After Spock served Captain Kirk the famous five-year mission the USS Enterprise, Spock resigned Starfleet. Leaving career him, returned the planet Vulcan order purge of emotions the Kolinahr ritual.
According the elder Spock TOS novelization: Star Trek, "In our histories same crew its onto same ship a time ultimate crisis." may imply there an untold story set the prime timeline which Kirk's crew faced extremely challenge still new untested unit.