Alicia is the fiancée and wife of William Sid Pride and the mother of Arthur. The Sid Prides have two other children besides Arthur, but they are never shown in the game.
William's fiancée Alicia has been kidnapped by the enemy. She is shown in the sequence after the final boss battle whether William is used in either single-player or two-player mode. William rescues his bride-to-be from the crashing enemy aircraft, and in two-player mode, their wedding is depicted and is officiated by Lord River-n-White.
Alicia appears as Arthur's mother in Sonic Wings 2. She is shown holding him in the sequence after the final boss battle if the player chooses Arthur in single-player mode.