West Will Power is one of the five winners from Wild Promises (Wild Event), winner of the Grade 3 My Charmer H., and the only one so far to earn black type. Wild Promises is a half-sister to the multiple graded stakes winner Icy Atlantic (Stormy Atlantic), whose wins include the Grade 2 Arcadia H., and to the stakes-placed Frosty Friday (Eskendereya). Her full sister Atlantic Dream is the dam of Gozilla (Flatter), third in the Grade 1 Hopeful S.

Second dam Frosty Promise (Frosty the Snowman) never raced and has seven winning siblings.

Third dam Has Promise (Skip Trial) is a half-sister to Jolie's Halo (Halo), a triple Grade 1 winner and sire.

Wild Promises had only one more foal after West Will Power, the unraced 4-year-old filly Cross Your Heart (Curlin).