List of Major League Baseball mascots


This is a list of current and former League Baseball mascots, sorted alphabetically.
The tradition of the Major League Baseball mascot began with Mr. Met, introduced for the New York Mets when Shea Stadium opened in 1964. Although some mascots came and went over time, the popularity of mascots increased when the San Diego Chicken started independently making appearances at San Diego Padres games in 1977. Philadelphia Phillies management felt they needed a mascot similar to the Chicken, so they debuted the Phillie Phanatic in 1978.
All major league teams except the Angels, Dodgers, and Yankees have "official" mascots. Nine team mascots – Sluggerrr, the Phillie Phanatic, Mr. Met, the Oriole Bird, Slider, Southpaw, Orbit, Lou Seal, and Fredbird – have been inducted into the Mascot Hall of Fame. Several others have been nominated since the Hall's creation in 2005.
Mascots in MLB are often used to help market the team and league to young children.

Current mascots

5-Borough Mascot Race (New York Mets)

For the 2025 season, the New York Mets unveiled a mascot race known as the "5-Borough Mascot Race" with five mascots representing each of the five boroughs of New York City: the pizza slice, the subway train, the skyscraper, the giraffe and the ferry.

Ace (Toronto Blue Jays)

Ace is the official mascot of the Toronto Blue Jays. He, along with his female counterpart, "Diamond" replaced former mascot BJ Birdie before the 2002 season as a mascot duo. Like his predecessor, Ace is a large anthropomorphic blue jay. The mascot's name is baseball slang for a team's top starting pitcher.
In 2004, Ace became the sole mascot of the team after Diamond was removed by the Blue Jays prior to the start of the season. In 2011, Blue Jays fans were introduced to his younger brother Junior.

Barrelman (Milwaukee Brewers)

Barrelman, is an auxiliary mascot for the Milwaukee Brewers. He originated from a logo used by the original minor league Milwaukee Brewers of the American Association from the 1940s to 1952. He was resurrected and upgraded to be a costumed performing character in 2015. Before then, he was only used as an official logo image, and, since 1977, only appearing on special materials.

Baxter the Bobcat (Arizona Diamondbacks)

Baxter the Bobcat is the mascot of the Arizona Diamondbacks. His full name is D. Baxter the Bobcat, and he became the mascot in 2000. The mascot was created by Brantley Bell, the son of Jay Bell, one of the players on the Diamondbacks 1998 inaugural season roster. Brantley came up with the name from two sources. "D. Baxter" comes from the team's nickname, "the D-Backs". The bobcat is from the original name of the stadium where the Diamondbacks play. Today called Chase Field, it was once called Bank One Ballpark, or informally as "BOB" for short. The bobcat is a wild cat native to Arizona.

Bernie Brewer (Milwaukee Brewers)

Bernie Brewer is the official mascot for the Milwaukee Brewers. The Bernie Brewer character became the team's mascot in 1973, appearing as a cheerful man with a big mustache. A beer-barreled chalet was built for him inside the stadium where he led the crowd cheering. Following each home run and every victory by the Brewers, he would slide down and plunge himself into a huge beer mug in celebration. He was joined by a companion Bonnie Brewer, who would playfully swat at the backside of the opposing team's third base coach with a broom as the field crew swept the base paths.
Bernie Brewer was a fixture at Brewers home games until 1984, when the Brewers re-built the bleachers at Milwaukee County Stadium, replacing the chalet with a sound tower and sending Bernie into retirement. By popular demand, Bernie Brewer came out of his retirement in 1993, when the fans voted for his return. Bernie was brought back not as just a mustachioed man in lederhosen, but a full-body costume of a man, including large foam head. The chalet was then rebuilt above the left-center field bleachers. The original beer mug that Bernie used to slide into is still in Milwaukee, Wisconsin as part of the Lakefront Brewery, Inc. tour.
In 2001, Bernie moved to American Family Field, and today the old chalet has become known as "Bernie's Dugout", stationed above the left field bleachers, where he cheers on for the team during home games. Currently he slides down a plastic yellow slide, no longer into a vat of beer but onto a platform in the shape of home plate when a Brewer hits a home run, while a sign tower with Bob Uecker's trademark home run call lights up above the Dugout, and he waves the team flag after landing in the bottom platform. When American Family Insurance bought the naming rights of the stadium, the dugout became "Bernie's Chalet", which pays homage to the old Milwaukee County Stadium chalet.

Billy The Marlin (Miami Marlins)

Billy The Marlin is the official mascot of the Miami Marlins. Resembling a marlin with limbs, he can be seen at every Marlins home game. He competes in a waterboat race, which is an animated video shown on the screen, during each game. The name, picked by original team owner Wayne Huizenga, is derived from the fact that a marlin is a billfish, and Huizenga wanted a name that was different from the baseball type names of other mascots and one that children could remember more easily. On Mother's Day and Father's Day, Billy is joined by his parents, Bill Sr. and Betty the Marlin. Billy is also seen at games dancing with kids on the field in between innings and making special appearances in the Fan Zone.
On Opening Day of 1997, the year the Marlins won their first World Series Championship, a Navy SEAL who was parachuting into Hard Rock Stadium as Billy, lost the head in mid-air. While the crowd was unaware of the problem, media outlets had been alerted to Billy's parachute entrance. When he did not arrive, the media ran with the story, getting national attention and leading to ESPN's Dan Patrick's nightly quote, "Bring me the head of Billy the Marlin!"
The original Billy The Marlin was John Routh, who spent 10 years entertaining Marlins fans. Routh previously portrayed the University of Miami mascots, Sebastian the Ibis and The Miami Maniac from 1983 to 1993, and prior to that, Cocky for the University of South Carolina Gamecocks.

Blooper (Atlanta Braves)

Since opening day 2018, Blooper has served as the current official mascot of the Atlanta Braves. He, too, has a Twitter account and is present in community events in the Atlanta area and around all of Georgia. Usually wearing a Braves jersey, he is unique for wearing goggles with the uniform and the hat.

Clark (Chicago Cubs)

On January 13, 2014, the Chicago Cubs announced that Clark, a "young, friendly Cub", would become the team's first official mascot in modern history. Clark was named after Clark Street, since the Cubs home field, Wrigley Field, is famously located at "Clark and Addison".

D-backs Luchador (Arizona Diamondbacks)

The D-backs Luchador is the second mascot of the Arizona Diamondbacks. After a giveaway of masks in June 2012 proved popular, the team introduced the Luchador as a permanent character in July 2013. He wears a black cape, red pants, and a mask patterned after the team's logo. Meant to represent the team's Hispanic fans, the Luchador also wrestles with Club Deportivo Coloseo at the Glendale Park and Swap.

Dinger (Colorado Rockies)

Dinger is the official mascot of the Colorado Rockies. He is an anthropomorphic purple Triceratops. The choice of a dinosaur, specifically this type, was inspired by the discovery of some fossilized bone fragments which were found during the construction of the Rockies stadium Coors Field. The fossils included part of a rib, believed to be from a triceratops. His name "Dinger" is one of many slang terms for a home run.
Dinger is often seen on the field before and after the game and roaming around the stadium during the game. When Rockies hitters are at bat in the late innings of a game, he often dances in the seats immediately behind home plate in an effort to distract opposing pitchers, sitting down only immediately before the beginning motion of each pitch.
Dinger works year-round promoting physical fitness and literacy for thousands of elementary school students in the Rocky Mountain Region. He acts out his own Dinger Story for the kids. He also makes appearances at Children's Hospital Colorado and Denver Health. He makes appearances at Rockies events including the 5K Home Run, and the Rockies Rookies Kids Fan Club.

DJ Kitty (Tampa Bay Rays)

DJ Kitty is one of three mascots for the Tampa Bay Rays. DJ Kitty comes from the Internet sensation of a kitty playing a DJ System and dancing to the music. The black and white cat wears a Tampa Bay Rays ring, wears chains, and wears his Rays hat backwards. DJ Kitty became an official mascot for the Rays in 2012. The Tampa Bay Rays' other official mascots are Raymond and Stinger.

Fredbird (St. Louis Cardinals)

Fredbird is the official mascot for the St. Louis Cardinals. He is an anthropomorphic cardinal wearing the team's uniform. A person dressed up as Fredbird can often be found entertaining young children during baseball games at Busch Stadium. His name is derived from "Redbird", a synonym for the cardinal bird and for the Cardinals themselves.
Fredbird was introduced in 1979 by the Cardinals, then owned by Anheuser-Busch, to entertain younger fans at the games. He quickly became popular with fans for his dancing, habit of "beaking" the heads of supporters, and for throwing T-shirts into the stands. In later years, he has been joined by "Team Fredbird", a group of young women employed by the club who help him with his T-shirt toss and occasionally in other duties.
Fredbird became part of the Mascot Hall of Fame in 2025.