Character mistake: Rodney says that one hour in real time would give them months inside the field. This is incorrect because if the ratio of time were 1:250 as stated before, one hour would only convert to 250 hours, which is 10 days and 10 hours.
Character mistake: The episode opens late at night when Syrus overhears Banner on a call where he discusses burying Jaden alive. The next morning is a classroom scene where Banner says the field trip will take place on Saturday at 7am, and the next scene shows Jaden, Syrus, Chumley and Alexis outside the school at 7am waiting for Banner to arrive. In this scene, Syrus tells Jaden he heard Banner talk about burying Jaden alive the previous night, but by this point, at least two nights must have passed. (00:03:48)
Character mistake: Professor Saotome checks the status of the Getter Robot when his son falls unconscious. The HUD output is written in awkward EngRish, from the first line of the status report, called; "Monitor the state of affairs", to smaller details like the article randomly used for certain lines ("a control device, a correspondent"). The biggest flub though is that the name of his son is "Tatsuhito", in proper romanization, but here appears as "Tatuto." (00:05:20)
Character mistake: When Collier is meeting all the 4400s at the reunion, Shawn calls Isabelle Maia by mistake. (00:31:10)