When Maverick shouts "No, Creed! Somebody stop him!" One of the black stripes on Wolverine's costume briefly disappears and reappears.
In the opening scene, during Wolverine's delusion, Sabertooth is seen in his newer character model introduced late in Season 4. For the rest of the episode, he is in his previous design, even when Wolverine is reliving the same memory.
When Beasts expresses concern about opening the door to the secret lab, Wolverine's mask, which is hanging over his back, is colored yellow instead of black.
When Sabertooth and Wolverine are grappling in the science lab, their voices are reversed. Sabertooth's mouth moves during Wolverine's lines and vice versa.