Gary Carter, the slugging catcher known as Kid for the sheer joy he took in playing baseball, who entered the Hall of Fame as a Montreal Expo but who most famously helped propel the Mets to their dramatic 1986 World Series championship, died Thursday in West Palm Beach, Fla. He was 57.

The cause was brain cancer, which had been diagnosed last May. Carter had been treated with chemotherapy and radiation, but his daughter Kimmy Bloemers said in mid-January that new tumors had been discovered. She announced his death on her family journal at CaringBridge.org.

Carter played with intensity and flair, hitting 324 home runs and punctuating many of the ones he hit at Shea Stadium with arm-flailing curtain calls emblematic of the Mets’ swagger in the middle and late 1980s. In his 19 seasons in the major leagues, all but two of them with the Expos or the Mets, he was an 11-time All-Star and was twice named the most valuable player in the All-Star Game.

Carter’s exuberance complemented his prowess at the plate. Curly-haired and with a ready smile, he was loved by the fans, first in Montreal, then in New York.