Trivia: In the beginning of the film, young Sonic gives Longclaw a flower with spiky petals. This flower is actually based on a flower sprite from the original "Sonic the Hedgehog" video-game for the Sega Genesis. (00:02:16)
Trivia: When Olaf just starts to sing "When I Am Older" count for about 10 seconds and watch the fire jump from tree to tree. If you watch the right side of the screen closely at the 10 seconds point, you can see the fire briefly take the form of Mickey's head.