The first mascot is called "BeiBei". She represents a fish and water, which in Chinese culture meaning you would have prosperity and a good harvest. BeiBei is good at water sports (for obvious reasons) like swimming and water polo.
"HuanHuan" is the Olympic Flame, big brother to the rest of the mascots, and the driving force of the Olympic Mascots and the Torch Relay. He is good at ball sports like baseball and handball.
"YingYing" is a Tibetan Antelope, one of the first protected animals in China. He is speedy and enjoys track and field events.
"NiNi" is a swallow. Traditionally, swallows have been very popular in China for artistic designs. People like to fly kites in the shape of swallows. She is known for her skill in acrobatics.
Put together, the mascots' names are: "Bei Jing Huan Ying Ni" which means: "Beijing welcomes you!"