Benny is a handsome, athletic 14-year-old of Latin American descent, possessing a cool, effortlessly smooth aura that makes him an instant role model to his peers. His style perfectly captures the nostalgic, sun-drenched spirit of the early 1960s. Benny is fiercely protective of his friends, fiercely passionate about the game, and possesses a quiet authority. Whether he is commanding the team to play through a record-breaking heatwave or silently picking up a baseball bat to back down a rival team of snooty, trash-talking Little Leaguers, Benny is a leader who leads by fearless example.

He gets his nickname because he starts almost every sentence by repeating the word "Yeah, yeah". He is a scrawny, loud trash-talker who always chews gum and plays a solid game of baseball. Benny famously teases Yeah-Yeah for running "like a duck". He is also your younger brother.

When he first tries to play baseball with the neighborhood kids, he can't catch or throw. He is famously labeled an "L7 weenie" (slang for "square") by the other boys because of his awkwardness.

Ham is a stocky, red-headed kid with a loud, expressive personality. He is usually seen wearing his signature backward New York Yankees baseball cap and a striped t-shirt. Ham is best known for his loud mouth and endless repertoire of insults. He uses his wit behind the plate to distract and intimidate opposing batters, famously initiating the "war of words" against the rival Little League team.

He wears thick, heavy black-rimmed glasses and a baseball cap, giving him a classic bookworm appearance. He is a smart aleck who acts tough and dramatic. He even teases the new kid, Scotty Smalls, before warming up to the group. He loves to tell tall tales and shares the terrifying legend of "The Beast," the giant dog next door. Michael Palledorous is nicknamed "Squints" because he has terrible eyesight and is constantly squinting to see, even while wearing his signature thick, heavy black-rimmed glasses.

He is the group's exclusive and fiery pitcher, known for his signature fast pitch called "the heater". Aside from Benny Rodriguez, Kenny is described as the most dedicated baseball player on the squad. He wears a Kansas City Monarchs cap and features a memorable big leg kick when he pitches.

He is friendly, low-key, and smart, but also harbors a rebellious, slightly wild edge. He is a capable player on the sandlot squad and even hits a double during their game against the rival Phillips team.

He plays first base on the neighborhood baseball team led by Benny Rodriguez. He is paired constantly with his younger brother, Tommy. Timmy comes up with the ideas and schemes, and Tommy immediately repeats and follows whatever he says—earning Tommy the nickname "Tommy Repeat".

He is a loyal and active member of Benny Rodriguez's neighborhood baseball team. He has a younger brother named Tommy. Tommy earned the nickname "Tommy Repeat Timmons" because he constantly repeated everything Timmy said.