[1] Elias played youth rugby for Carmarthen Athletic, where his grandfather once served as club chairman.
[4] With first choice hooker and fellow Bro Myrddin graduate Ken Owens injured, Elias started the semi-final against Leinster and final against Munster, winning the 2016–17 Pro12 title with the Scarlets.
In his third test appearance, Elias came off the bench against South Africa on 2 June 2018, scoring a late try to put Wales in the lead and ultimately secure the win.
[11] Having been named in the Wales squad for the 2019 Rugby World Cup, Elias made one appearance, starting in the win against Uruguay.
[13] He made three appearances off the bench during the 2022 end-of-year rugby union internationals, and was yellow carded in the final match against Australia.