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Original Description:
 
This rainbow-haired Pegasus pony has one main passion: flying — FAST! Anypony who has ever seen her in the air has been in awe of her speed, agility, and courage. She is a member of the famous flying squad, the Wonderbolts. Dash is a confident, competitive, adventurous friend who’s always up for a challenge and meets every adventure head-on. Even though she enjoys stirring up a little mischief when she’s not soaring through the skies, Rainbow Dash proves time and time again that she is a true hero and a true friend.  
Rainbow Dash’s Element of Harmony is Loyalty.