In "Core-Uption", the framed portrait of Human Kimberly Gordon has, shows her eyes looking noticeably towards the right side of the frame (her left). In the shot of him placing the portrait on Gear's Dash, Kimberly's eyes in it are staring directly ahead of her instead.
In "Core-Uption", close to the end showing the children playing in the playground, the sky from within the metal slide hole is a blue color instead of the pale amber the rest of the sky is.