The Alvin & the Chipmunks set of Happy Meal® toy premiums was released by
McDonald's Australia to promote the new movie Alvin & the Chipmunks 3 - Chipwrecked.
The characters are made from hard plastic stand between 8cms and 11cms tall.
Each character has its own special action:

Dance Off Brittany - stage lights up and dances from side to side when pushed.
Awesome Alvin - on his boogie board.
Leaf Ridin' Jeanette - a pull & go toy.
Enchante Simon - makes the sound of a big kiss (click for sound).
Edge Defying Jeanette - a wind up toy which changes direction when reaching the edge of a table.
Smooth Talking Alvin - says "OK" , "OH yeah", "Action" (click for sound).
Beachside Brittany - holding a swivelling palm tree umbrella.
Theodore Bounce - bounces on his rubber life-ring.
Island Breeze Eleanor - poseable arms and twirling skirt.
Zip Line Simon - slides down a flying fox.