The 24-year-old Ivorian lit up Ligue 1 last season and Gunners faithful will hope that he can inject some impetus into Arsenal's attack.
The £72m Arsenal spent on acquiring Pépé is the fourth-highest fee ever laid out by a Premier League club. How will he fit in at Emirates Stadium?
Pépé's career so far 🇨🇮
Marcelo Bielsa was Pépé's first high-profile coach when the Chilean tactician took charge of Lille at the start of the 2017/2018 season. Although Bielsa didn't last long, his approach of blooding youngsters in favour of established players paid dividends for Pepe.
Three goals in 33 French top-flight appearances for Angers in 2016-17 became 13 goals and six assists in a struggling Lille team under Christophe Galtier. This indicates rapid progress. Under Galtier (a man who also coached Pierre-Emerick Aubameyang at Saint-Etienne) Pepe became the first Lille player to score 20 league goals since Eden Hazard in 2011-12.
Pépé netted 22 in Ligue 1, second only to PSG's Kylian Mbappe, while also registering 11 assists, also the second-best tally in the division, as Lille finished surprise runners-up to PSG.
Interestingly, Pépé started out as a goalkeeper in the Angers youth academy. He'll be hoping to trouble Premier League goalkeepers week in week out in 2019/2020.
Pace, power and creativity 💨 ☄️ 🥽
Unai Emery got his man after intense speculation and the Ivorian is expected to hit the ground running after his eventual £72m move.
The skilful winger possesses a wonderful left foot and acceleration off the mark and over short distances. He used it to fashion space in order to create chances for teammates and get shots away. This will be music to Arsenal's fans ears, as they've been crying out for a natural winger with directness and end product over and above pace, power and technique.
Pépé is left-footed, meaning that he will be able to be deployed as an inverted winger who cuts inside to create passing and shooting opportunities, in a way that Arjen Robben became famous for during his own glittering career.
Integrating into the Arsenal way 🔴
Pépé is quick and direct, especially on the counter-attack, which will provide a new option for manager Emery. With Arsenal accustomed to hogging possession of the ball, Pepe and Aubameyang's pace may serve as an outlet and allow them to surrender possession of the ball and devastate sides on the break and in transitions.
Pépé's versatility will allow Emery the option of interchanging his trio of attackers and cause opponents to second-guess their defensive gameplans. The Spanish tactician's call for his side to be a "chameleon" will undoubtedly benefit from the wildcard element that Pépé will bring to London.
If Arsenal's record signing can gel with Aubameyang and Lacazette, Gunners fans have cause for optimism this season as they look to reinvigorate their attack and gun for a top-four place.