Risto was born as "Ricardo Mejide Roldán",[2][3] and not as some sources claimed that his real name was "Evaristo".

[5][6] Risto Mejide holds a Bachelor's degree and MBA from the ESADE Business School (1997), where he also worked as a lecturer.

[7][8] On 20 May 2017, Mejide married model and social media personality Laura Escanes, twenty years his junior.

In 2009, Mejide began to host his own show, titled G-20, on Telecinco, but it was cancelled shortly after its premiere due to low ratings.

The show was renewed for a fourth season, but Mejide was replaced by journalist Pepa Bueno as his contract with Mediaset España terminated.