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