- Anvilicious: Like G.I. Joe, the series tried to get the censors and Moral Guardians off of its back by doing a lot of moralizing and Captain Obvious Aesops. Unfortunately, it didn't work out too well, as both this show and Ace Lightning ended up being singled out as "anti-social" by people like Dale Kunkel and organizations like the United Church of Christ and the Center for Digital Democracy.
- Common Knowledge: Draga was originally thought to be an Ancient in the series, but this was later proven to be untrue. Despite this, countless viewers believe that Draga's species is Infinity's canonical interpretation of the Ancients. This makes it pretty easy to tell who's actually watched the show and who hasn't.
- Complete Monster: Commander Da'kyll of the Tlak'kahn Empire is the ruthless, bloodthirsty leader of the Warrior caste, known for his habit of turning his adversaries into living trophies in suspended animation while he works on finding a way to break their spirits and turn them into mindless servants. After orchestrating the massacre of Major Gus Bonner's old team, Da'kyll has him framed as a traitor to Stargate Command, and relentlessly pursues him and his new squad across the universe, intent on capturing Bonner's mysterious alien ally Draga, who Da'kyll is convinced is one of the Ancients. Da'kyll at one point takes a village hostage, and threatens to destroy it unless Bonner surrenders to him; when Bonner does give himself up, Da'kyll orders that the village be razed anyway before deciding that it would be more fun to let its inhabitants die slow deaths from an illness that is ravaging them. When the Mardan, one of the Tlak'kahns' Slave Races, help him capture the Stargate crew, Da'kyll destroys the team's cure for a plague that the Mardan are suffering from while noting that if the Mardan manage to survive the sickness on their own, they will have proven worthy enough to be used as Cannon Fodder. Da'kyll threatens soldiers who fail him with torture, murders his professional rivals, and frequently flouts the authority of the Nax'kan Council, who he intends to overthrow using the knowledge and power of the Ancients.
- Funny Moments: Da'kyll was always a Large Ham, but he really starts Chewing the Scenery during his Rousing Speech in "Feet of Clay."Da'kyll: IT SHOULD NOW BE OBVIOUS TO ALL OF YOU HOW GREAT THE TLAK'KAHN ARE! NO ONE IS AS STRONG AS THE TLAK'KAHN! NO ONE IS AS BRAVE! WE! ARE! EVER! TRIUMPHANT!
Seattle: He forgot conceited.
Harrison: Yeah, what a windbag.
Da'kyll: EVEN THE LEAST AND MOST INFERIOR AMONG YOU MARDAN... uh, there isn't much of a crowd.
Pahk'kal: Most of the Mardan are ill, Commander.
Da'kyll: Oh, yes, I'd forgotten. One can't be expected to remember every little thing.
- Harsher in Hindsight: Most of the established alien races in SG-1 are left unmentioned in Infinity. While this is most likely due to Infinity's creative team being unfamiliar with them, the final episode of SG-1 shows that the Asgard would not have lived to Infinity's time anyway, having committed mass-suicide by destroying their home planet, in order to prevent the Ori from acquiring their advanced technology.
- Hilarious in Hindsight:
- The Goa'uld System Lords were defeated within the last thirty years before the start of Stargate Infinity. Stargate SG-1 was in its sixth season at the time Infinity premiered, during which a new Big Bad — Anubis — came to power and the System Lords' power gradually began to crumble away. The System Lords were officially defeated in Season 8, and the last remaining one was killed in the Grand Finale film, Stargate Continuum.
- The Stargate program was at some point made public thirty years prior as well. Though it was canceled, this would have happened in the third SG-1 film, Stargate: Revolution.
- Moral Event Horizon: In "Double Duty", Da'kyll takes a village hostage and threatens to kill everyone in it unless he is given Bonner and Draga. When Bonner turns himself in, Da'kyll orders that the village be razed anyway, and when Bonner points out that the villagers are all sick, the bemused Da'kyll calls off his men because he has decided that it would be more fun to let the villagers die slow, painful deaths from the disease afflicting them.
YMMV / Stargate Infinity