The Colombian has signed five-year deal with the club after moving from Barcelona for a fee of around £28million.
Mina had always been linked with a move away from Barcelona this summer with the club's purchases of non-EU players in Malcom, Arthur and Arturo Vidal filling their quote per La Liga's rules.
Several Premier League sides including West Ham and Chelsea had been in the hunt for the Brazilian winger while AC Milan also expressed an interest.
Jordan Pickford stays put at Everton - The English backstop saved the Toffees' proverbial bacon on many occasions last season, and was a massive part of England's World Cup run.
Don't miss the Perseid meteor shower this weekend
Look toward the constellation Perseus in the northeastern sky between 9:30 p.m. and 5 a.m.to view shooting stars. The show might not be quite as grand on August 11 and Aug.13, but it will still be a treat.
"I chose Everton because of all the things I had heard about Marco Silva and after speaking to him I was happy with what he said to me", Bernard told Evertontv.
'I know about Everton's players and I look forward to being able to play with my new team. He is a very good coach and he has achieved really good things at other clubs.
Brighton and Hove Albion secured defensive reinforcement in the shape of former Barcelona right-back Martin Montoya, who joins from Valencia on a four-year deal.
Everton's new manager wanted two central defenders before the deadline and was hoping to get his wish with a second loan signing, that of Kurt Zouma from Chelsea.
"I spoke to Lucas and he told me all about the Club, which also made me keen to come here".