YMMV / Sinestro

• Can't Un-Hear It: Fans tends to picture Sinestro sounding like Ted Levine, the late Miguel Ferrer, Ron Perlman, Victor Garber, Jason Isaacs, Marc Worden, or Troy Baker.
• Fanon Discontinuity: Wonder Woman being recruited by the Sinestro Corps. Even if her nature as an All-Loving Hero is mostly just given lip service in the New 52 rather than demonstrated at any point it goes against the core of every iteration of her character that's not specifically an evil counterpart for her to be eligible for a yellow ring.
• Foe Yay Shipping: Sinestro's longstanding rivalry with Hal Jordan occasionally gets the shipping treatment from fans.
• Magnificent Bastard:
  • Green Lantern: Thaal Sinestro is Hal Jordan's personal nemesis, and both a former Green Lantern and planetary dictator. Convinced that the Green Lanterns have failed in their mission of bringing order and security to the universe, Sinestro formed his own Sinestro Corps, and led them into a war against the Green Lanterns, who were only able to defeat Sinestro by resorting to lethal force—the very result the renegade Lantern had been aiming for. Since then Sinestro has changed allegiances multiple times, always with the intention of bringing his vision of stability to the DCU, whether it wants it or not.
  • Green Lantern: First Flight: Thaal Sinestro is introduced as a trusted and celebrated, but harsh and draconian Green Lantern. Having grown embittered with what he sees as the Guardians' weakness and inability to combat chaos and disorder, Sinestro plots to overthrow them, turning fellow Lantern Boodika to his cause. Allying himself with the warlord Kanjar Ro to steal the powerful yellow element, Sinestro hides his involvement by simultaneously running the investigation into the theft. Taking new recruit Hal Jordan under his wing, Sinestro shows a willingness to torture and kill in pursuit of his goals while also having Boodika court Jordan as a possible ally. When Kanjar Ro becomes a liability, Sinestro kills him, frames Jordan, and successfully claims the weapon built from the yellow element. Laying siege to Oa, Sinestro overwhelms all resistance before forcing the Guardians to surrender, and even when his plans are thwarted by Jordan, he refuses to give up without a fight. A cold and brutal man who is nevertheless devoted to his cause, Sinestro proves himself as both the Corps' greatest paragon and its greatest threat.
  • Green Lantern: The Animated Series: "Prisoner of Sinestro": Thaal Sinestro is a celebrated, but maverick Green Lantern known for his Nerves of Steel and willingness to bend the rules to suit his purposes, as well as being a friend and mentor to Hal Jordan. Tasked with recovering the dangerous assassin Neuroxis, Sinestro is imprisoned by his fellow Green Lanterns when he falls victim to Neuroxis's mind-jumping powers. Escaping with ease and deducing the criminal's abilities and weakness, Sinestro forms a plan to force Neuroxis to abandon its host in favor of returning to its own body, voiding the atmosphere on the Interceptor except for Neuroxis's prison cell, forcing the criminal to return to its own body or suffocate, stoically keeping to the plan even as Razer nearly suffocates. When the plan works, Sinestro reveals that he had depressurized the cell, coldly taunting Neuroxis as the creature painfully suffocates, covering up his actions and presenting the death as an accident, considering Neuroxis's death to be justice served.

• Nightmare Fuel: Ethan Van Sciver, with his ultra-detailed pencil work, managed to make Sinestro look imposing, and somehow managed to make the Parallax entity look terrifying.
• Memetic Mutation: Sinestro addressing a Guardian as a "stupid little troll" has become a popular insult on comic-book forums.
• My Real Daddy: While Sinestro had been around for years, Geoff Johns is often credited with developing him into the fearsome villain he is today.
• Rooting for the Empire: A large number of people have grown to root for Sinestro and his Corps. There are many reasons for this, but chief among them is that they see the Guardians of the Universe as ineffectual at best. There's also the fact that Sinestro's one of the few villains out there who seems to be consistently capable of showing up Hal Jordan.