Maid of Honor
The bride's baby sister and best friend. She loves the groom almost as much as the bride does.
Best Man
The groom's cousin and closest thing to a brother. He tagged along on almost every date the first couple years of the bride and groom's relationship.
Bridesmaid
The groom's sister. One half of the team that set up the bride and groom. She will be the one flirting with all the boys.
Groomsman
The bride's brother. The other half of the team who set up the bride and groom. He will be the one getting the groom drunk.