Stellvester Ajero was born on June 16, 1995 better known by his stage name “Stell”, is a Filipino singer, songwriter, dancer, and choreographer. Known for his wide vocal range, he is the main vocalist, lead dancer and main choreographer of the Filipino boy band SB19 managed under 1z Entertainment.

Before joining SB19, he is a member of a dance cover group called “SE-EON” together with his fellow SB19’s member, Josh.

In 2016, Stell auditioned for ShowBT Philippines. He is the only member who chose to stay in the training before some members returned and continued what they started and debuted as SB19 on October 26, 2018 with the song, “Tilaluha” written by Pablo himself.

Stell choreographed the dance routine of “What?”, the first single of their extended play Pagsibol.

Stell was chosen as one of the performers in the musical show called “A Night of Wonder with Disney+” in November 2022 during the launch of streaming platform Disney+ in the Philippines. He sang his rendition of “Circle of Life” originally performed by Elton John, which was an original soundtrack for the 1994 film The Lion King.