Neil deGrasse Tyson
Narrator
Chris Wedge
Scrat (voice)
Karen Disher
Scratazons (voice)
John Leguizamo
Sid (voice) (uncredited)
Jennifer Lopez
Shira (voice) (uncredited)
Simon Pegg
Buck (voice) (uncredited)
Ray Romano
Manny (voice) (uncredited)
Adam Devine
Julian (voice) (uncredited)
