(at around 25 mins) When Red and the others are in the meeting in Mighty Eagle's mountain, it's nighttime outside. But a couple minutes later when they jump to escape Zeta's ice ball, it is broad daylight.
The Blues have different parents from the First Movie, where the new parents are just Betty and Alex (from the Father's Day Trailer)
(at around 50 mins) When Red and Silver are climbing up the mountain to get to the entrance of the "super weapon", Red's hat is blown away. But when Red reaches the top, his hat is back on his head.
(at around 1h 23 mins) Red stops his speech in front of the crowd and runs after Silver just she is going up into the sky by means of the slingshot. The scene cuts to Red pulling on the slingshot from behind the rubber band for half a second, then immediately cuts to Red and Silver walking away from slingshot back to in front of the crowd so Red can give Silver credit for her contributions in front of everyone.
Actually, Red is holding Silver's backpack, and what look like the rubber bands of the slingshot are in fact the straps of the backpack.
Actually, Red is holding Silver's backpack, and what look like the rubber bands of the slingshot are in fact the straps of the backpack.
(at around 41 mins) When Zeta calls Steve's mobile phone, on the screen, it says that Zeta is calling from a mobile phone, while she is clearly calling from a landline.