James T. Kirk in The Undiscovered Country worries about becoming this if there's peace between the Klingons and the Federation, wondering if peace is what he's really afraid of because someone like him won't be necessary anymore.
Averted in Star Trek: The Next Generation's "Relics" where Scotty wonders if there's still a place for him in the 24th century (there definitely is).
James T. Kirk in The Undiscovered Country worries about becoming this if there's peace between the Klingons and the Federation, wondering if peace is what he's really afraid of because someone like him won't be necessary anymore.
Averted in Star Trek: The Next Generation's "Relics" where Scotty wonders if there's still a place for him in the 24th century (there definitely is).
Judge Dredd in The Green Earth storyline.