Edwin Diaz has some competition for the most electric bullpen entrance at Citi Field.

In his first appearance with the Mets, newly acquired pitcher Ryan Helsley showcased his skills in a 4-3 defeat against the Giants. The team has embraced his legendary entrance, which became popular during his time with the Cardinals at Busch Stadium.

As Helsley entered the game from the bullpen on the right side, the air filled with the sounds of AC/DC’s “Hells Bells,” and the stadium flickered with on-and-off lights at Citi Field.

Helsley joined the Mets on Wednesday, following a trade that sent infield prospect Jesus Baez and right-handed pitching prospects Nate Dohm and Frank Elissalt to the Cardinals. This transaction occurred shortly after the team acquired the renowned reliever Tyler Rogers through a trade with the Giants.

Helsley, a two-time All-Star, justified the grandiose entrance with an impressive outing, using his 101 mph fastball to twirl a scoreless ninth inning with three strikeouts.

Diaz followed suit by entering to his beloved Timmy Trumpet “Narco” introduction for the tenth, although he went on to surrender the go-ahead run to San Francisco.

Before the trade, Helsley had spent his entire seven-year MLB career with the Cardinals, who selected him in the fifth round of the 2015 draft. 

Helsley, 31, posted a 3.00 ERA in 36 appearances as St. Louis’ closer this season, making 21 saves. 

Last season, the Tahlequah, Okla. native led the majors with 49 saves.