It is revealed in this episode that Sleepy has a friend besides the 7D.
When Grumpy sarcastically introduces himself to Winken, Blinken and Nod, the top part of Sneezy's hat is cut off, while a part of his scarf that runs down his shirt is not shown. Also, the top half of his shirt excluding the sleeves is red.
When Nocturna surprises the 7D on their escape on the dream catcher with Sandie and Sunny on top, Sandie and Sunny aren't there.
When Happy, Dopey, Doc, Bashful and Sneezy were upset after Sleepy and Grumpy left, Sneezy lost his pants.