Alissa Sonier was born on July 27, 2000 in Seoul, South Korea. She currently lives in Colgate, Wisconsin with her parents, Brian and Kathy Sonier. She has an older brother, Chris and he is married to Samantha. Alissa is a senior at Hamilton High School in Sussex, WI and she will graduate in the spring of 2018. She has been on Honor Roll all though middle school. During Alissa's spare time, she enjoys listening to music and hanging out with her friends and family.

Alissa signed up for recreational classes at LaFleur's Gymnastics when she was five years old. She fell in love with the sport and tried out for level 3 team two years later and has been on team at LaFleur's Gymnastics ever since. As a level 4 gymnast in 2008, Alissa finished first on uneven bars and second on floor exercise at the State Championships. She was the 2009 and 2010 Level 5 State All-Around Champion.

In 2011, Alissa started competing level 7. She finished fifth in the all-around and third on balance beam and floor exercise at the State Championships. She moved up to level 8 for the 2012 season where she finished second in the all-around with a 37.400, first on balance beam and floor exercise and second on uneven bars at the State Championships, qualifying to the Region 4 Championships. She was a member of the Wisconsin Super 8 Team.

As a first-year level 9 gymnast in 2013, Alissa finished sixth in the all-around and third on floor exercise at the State Championships and she placed sixth on balance beam at the Region 4 Championships. In 2014, she finished fifth in the all-around and second on balance beam and floor exercise at the State Championships. At the Region 4 Championships, Alissa placed eighth in the all-around and third on balance beam and qualified to the Level 9 Western Nationals in Boise, ID.

Alissa moved up to level 10 for the 2015 season. She earned a gold medal on vault at the Island Adventure Meet. At the Honkytonk Classic, she grabbed gold medals on vault, balance beam, floor exercise and in the all-around. At the LaFleur Invitational, Alissa finished fourth in the all-around and first on balance beam. She was unable to compete rest of the season due to an injury.

In 2016, Alissa finished first in the all-around, first on floor exercise and second on vault and balance beam at the State Championships. At the Region 4 Championships, she placed first in the all-around, first on balance beam and third on vault. Alissa qualified to the Junior Olympic Nationals in Ft. Worth, TX where she placed 18th on balance beam with a 9.400 out of 57 gymnasts. Alissa was voted Comeback Gymnast of the Year and Hardest Working Gymnast of the Year at the banquet. In 2017, Alissa placed third in the all-around and third on vault, uneven bars and floor exercise at the State Championships. At the Region 4 Championships, she placed their din the all-around with a 37.050 and first on balance beam. Alissa qualified to the Junior Olympic Nationals in Indianapolis, IN where she placed 12th in the all-around with a 37.800, ninth on balance beam and tenth on vault out of 56 gymnasts.

Currently, Alissa is preparing for the 2018 season. She trains 21 hours per week at LaFleur's Gymnastics in Germantown, WI under coaches Tammy Donahue, Greg LaFleur, Helen Mueller and Ryan Newman. She would like to obtain a college scholarship to a Division 1 school.