The 24-year-old Gibson has moved to Merseyside for an undisclosed fee, becoming the club's second signing of the January transfer window following Landon Donovan's loan move from
The midfielder, a product of the
Gibson, who was born in Northern Ireland but opted to play for the Republic of Ireland, has played 17 times for his country, scoring once.
Reports suggest the initial fee for Gibson is £1m with a further £1m appearance-related.
"I can see a hunger," manager David Moyes told evertonfc.tv. "He (Darron) is young and wants to prove himself," .
The Republic of Ireland international is unlikely to be the last arrival at Everton this month with the Toffees boss looking to strengthen in central defence and up front.
However, the Scot has said he may have to look to loans to fill gaps in certain areas.
Gibson, who has a reputation for scoring some spectacular goals, is hoping to bring some much-needed firepower to Everton.
"It's a great club with great fans and hopefully I can improve Everton," he told evertonfc.tv. "I think I'm a goalscoring midfielder and hopefully I can get a few goals.
"I've scored a few long-range shots - I don't think I've scored one inside the box to be honest - and if I score goals it's a bonus for me. I'm just looking to do as well as I can for the team."