Representing Switzerland, William Wallis is active in the Age of Empires II scene. Across all ladders, William Wallis has played 2280 matches. William Wallis primarily plays on the ranked random map team ladder.

When selecting a civilization, William Wallis goes with Mayans about 17.9% of the time. William Wallis wins most often with Ethiopians—62.2% in 148 games. African Clearing has proven to be William Wallis's strongest map—55.8% win rate in 77 games.

William Wallis wins 52.5% of matches when playing as flank (573 matches). A rating of 1402 in RM 1v1 reflects William Wallis's current level. With 1544 games played in RM Team, William Wallis has won 52.7%.