The hard-throwing veteran reliever is ready for any role that comes his way in the back-end of the Mets' revamped bullpen.

Newly acquired Mets flamethrower Ryan Helsley made his debut in Queens during Friday’s 4-3 loss to the Giants, and the team is adopting his infamous entrance, a staple at Busch Stadium during the reliever’s tenure with the Cardinals.

The Mets are acquiring hard-throwing closer Ryan Helsley from the St. Louis Cardinals on Wednesday, a day before the July 31 Major League Baseball deadline, the team announced Wednesday. The Cardinals get back three minor leaguers: shortstop Jesus Baez and right-handed pitchers Nate Dohm and Frank Elissalt.