Continuity mistake: When Raven telekinetically reassembles the broken chime bead necklace, it has about nine beads and is rather tight, but before and after that the necklaces feature about 13 or 14 beads and are wide enough to fit around the others' necks.
Continuity mistake: Robin is chasing Red X. Red X throws a net of some kind onto Robin, then Robin says, "I'm fine. Get X. Go." and points toward Red X. Later, we find out that this was actually a hologram of Robin, when Starfire accidentally activates it again. However, this time, the hologram of Robin does not point after his dialogue.
Continuity mistake: When Starfire is force-fed pie by Mother May-Eye, she swallows a rough clump of pie before pretending to be mind-controlled. But after may-Eye leaves, her tongue evicts a whole pie from her mouth, plate and all.
Suggested correction: It's not hard to believe that Starfire's tongue has the ability to retrieve things from her stomach. As she is an alien who has multiple stomachs and many strange qualities.
Fear Itself - S2-E5
Continuity mistake: When the Wicked Scary Monster first reveals itself in the Titan's Tower, we see the Titans huddled together in chibi-form after the commercial break. At first we see the Titans cowering behind Robin, who is standing in the middle, but when we see the Monster again up front, suddenly Starfire has taken the center and Robin stands between her and Beast Boy.
Continuity mistake: Within the timestream, Starfire rips off Warp's vortex regulator with her left hand. She still has it in her hand when she first shields her face with her left arm, but as we see Warp dropping out of the timestream and Starfire following right afterwards, both of her hands are empty.
Continuity mistake: The clasp on Raven's cloak also serves as an alert and tracking device, as we could see in "How Long Is Forever?" Robin, Starfire and Cyborg, whilst tracking Raven, find the clasp lying on a ledge in the sewer. But as they encounter Beast Boy as the super-werewolf and Raven hanging from his teeth, her cloak is still secured with the clasp.
Continuity mistake: Starfire takes the Jewel of Charta from Blackfire. Yet when Starfire blasts Blackfire, it is still on Blackfire. You have to be quick to catch this one.
Fear Itself - S2-E5
Continuity mistake: The animated video shelf which goes after Beast Boy uses red and grey DVD cases as eyes and teeth. When Beast Boy roars at it as a T-Rex, the shelf loses its "eyes" and "teeth" out of fright, but when Beast Boy charges into it, it suddenly has them all back on.
Fear Itself - S2-E5
Continuity mistake: After the video rental clerk shoves the Wicked Scary DVD into Beast Boy's face, the scene fades to the evidence room where Robin is depositing Control Freak's remote. In the showcase to the left which holds the masks of Slade's robots, we also see some of the Puppet King's Titan puppets and his soul-switching control, which got crisped in blue fire in first season's "Switch"; therefore it should not be on display. (Switch to slow run to detect it; it's rather difficult to catch on normal speed.).
Continuity mistake: During the Puppet King's final rehearsal (just before the title sequence), the Raven puppet has a gem on its forehead, just like the real Raven. Later in the Titans Tower, however, the gem is no longer on this puppet.
Continuity mistake: After Warp just barely managed to fend off Nightwing's grenades, he notices Nightwing's shape leaping at him. In that shot, before the scene where Warp sinks into the ground, the socket for his vortex regulator is glowing blue instead of red.
Continuity mistake: Season 5, episode 7, "Hide and Seek": Whenever Raven tries to contact Robin and Beast Boy answers the com, the background on the com's screen always shows daylight even when Raven calls up at nighttime.
Continuity mistake: Right after Beastboy "pulls the red candy cane thingamahoozit", and the T-ship flies toward the screen, Cyborg's hands and forearms are visible, even though they aren't found until the end of the episode.
Continuity mistake: Starfire manages to keep away the pies Mother Mae-Eye is force-feeding her, even to the point that her lips are kept clean. But when Mae-Eye sends in the Turbo Love 3000 XL mega pie, Starfire's mouth is suddenly stained with pie filling.
Continuity mistake: When the mutant moths are first seen, their eyes glow in sinister red, but in all subsequent encounters in this episode, they have blueish eyes.
Continuity mistake: The Titan Communicators' lids depict the Titan's logo: a white T in a black circle, encased by a yellow rim. When Robin calls up the other Titans after recovering from his paralysis, the lid of his com device has a black T in a rimless yellow circle; later it has the standard design described above.
Fear Itself - S2-E5
Continuity mistake: After claiming to Cyborg (her last remaining teammate) that she never gets scared, Raven turns away to find him missing; at that point you can see the cellar door in the right-hand wall. But when the winged shadow monster appears and Raven turns to run, the cellar door is gone.
Continuity mistake: After Cyborg switches the microphones back on and Raven asks whether he could 'accidentally' leave it off, Beast Boy swells his vein. In that shot you can see the yellow marking stripe from the Titan Tower's sub hangar outside BB's canopy, however, at this time they are already in the deep sea. It's simply a repetition of an earlier scene.
Continuity mistake: When Raven summons her emotions near the end, there is a green-cloaked Raven next to the yellow-cloaked one. But when they start spinning, the cloak turns from green to red.