Emery did not disclose what his plans are for the Arsenal squad in terms of transfers, but said that "all the players, for me, that I want" will remain with the team. I want to make an effort to speak with you, to the supporters, to explain my ideas, my ambition and to explain I am very excited for this opportunity at a big club, with a grand stadium.
Emery joins the Gunners after leaving Paris Saint-Germain, who he guided to the Ligue 1 title.
Asked about how much he is relishing going up against Guardiola and Mourinho, Emery said: "I'm thinking about the present and the future". I think we can, and we want to be candidates for them.
Three other assistants - technical coach Pablo Villanueva, fitness coach Julen Masach and video analyst Victor Manas - also have worked alongside Emery for several years.
The Spaniard emerged as the shock favourite earlier this week after it had appeared former Arsenal captain Mikel Arteta was in line to land the job.
That follows the appointments of Raul Sanllehi as head of football relations and Sven Mislintat as head of recruitment over the past year.
"Unai has an outstanding track record of success throughout his career, has developed some of the best young talent in Europe and plays an exciting, progressive style of football that fits Arsenal perfectly", chief executive Ivan Gazidis said following Emery's appointment. We had a meeting on Monday.
Had further stints at Almeria, Valencia and Spartak Moscow before he moved to Sevilla in 2013, where he led the team to three consecutive Europa League titles from 2014.
"We were in a fortunate position to name our first choice".
Emery, who was unveiled at a press conference at the Emirates, said his new role as the Gunners' head coach was a "dream come true".
Emery, meanwhile, had been expected to return to Spain to take over at Real Sociedad following the end of his two-year reign at PSG.
He also said he wants to keep the same brand of attacking football that was Arsenal's hallmark under Wenger - but hinted that he'll demand more pressing without the ball from his players.