[1] Of Nigerian origin,[2] Martins moved from Lagos to Ireland in 2002 after his parents separated, where he grew up in Swords, a suburb just north of Dublin in Fingal.
He took a two year PLC course with the Bull Alley Theatre Company at Liberties College alongside his good friend Kieran Flynn.
[6] Martins made his television debut as Zac in the RTÉ fantasy comedy Blasts from the Past.
[9] Around this time, Martins also appeared in the Virgin Media One crime drama Redemption as DS Luke Byrne.
[10] In August 2021, it was announced Martins would star as Olaudah "Laddie" Cambridge in the period drama The Confessions of Frannie Langton, an adaptation of the novel of the same name by Sara Collins.