He played college basketball for the NJIT Highlanders and the Stephen F. Austin Lumberjacks.

[1] Due to an impressive performance at the "200 mil Estudiantes por México" youth tournament, Willis received a scholarship to play at the Canarias Basketball Academy in Spain in 2014.

[7] He made his professional debut in a 93–80 loss to the Fuerza Regia de Monterrey on July 22.

[9] As a member of the Rayos de Hermosillo, Willis was named a CIBACOPA All-Star in 2024.

[13] His father, Rafael, represented Mexico in Basketball at the 1991 Pan American Games while his mother was a volleyball player.