Gomes arrived on a season-long loan deal from the Spanish giants, while Mina agreed a permanent deal worth £27.2m (€30.25m) rising to £28.5m (€31.75m).
Barcelona originally purchased the Palmeiras player in January, paying 11.8 million euros, a very small amount considering the prices that were being paid for other centre-backs at the time.
But Bernard instead opted to link up with Marco Silva at Goodison Park.More news: Oscars Adds Popular Film Category, Will Edit Shows to 3 Hours
It was also a good day for Leicester City, who, not only managed to keep hold of Harry Maguire amid reported interest from United, but also brought in the well-regarded young defender Caglar Soyuncu from Freiburg, tied Jamie Vardy down to a new deal and signed Croatia Under-21 worldwide Filip Benkovic.
Everton signings Yerry Mina and Andre Gomes.
Speaking to evertontv, Bernard said that the chance to join a "great club with great tradition" was the key driving factor behind his decision to sign for the club, vowing to help "make things happen" alongside former Watford manager Silva.
Gomes has always been a fringe player at Barcelona, despite signing for a fee of £31m plus €20m in add-ons in 2016, with only 46 appearances made in La Liga since joining from Valencia.More news: Michael Moore releases trailer for Trump documentary Fahrenheit 11/9 — TRAILERCHEST
'They are historically among the four most successful clubs in England and when I found out about the club and what the manager wanted from me, I was happy.
'That's really why I made the choice - because of the confidence both the manager and the club showed in me'.
"I did not need any convincing to come here".
There was a predictably frantic conclusion to the last hours of business, the Premier League waiting to register ten players after the 5pm deadline, deal sheets submitted pending medicals and the agreement of personal terms.More news: Ford celebrates 10 million Mustangs in proper fashion