Sundance is an Earth pony and Megan's one special pony. She's a tad klutzy, but is a really good jumper (though she has trouble landing).
She's more or less the star of Escape from Catrina. She nearly drowned Baby Moondancer, ruin a banner, and catapulted Sparkler and Spike through the air into buckets of paint. Her time came when she saved Baby Moondancer from Catrina with her excellent jump.
She was voiced by Katie Leigh.