This article is about the character in the Little Einsteins franchise. For other characters with the same name, see Leo (disambiguation).

Leo (full name Leonardo) is the protagonist of Little Einsteins. At 6 years old, he (as well as June) is the oldest of the group. He is the Little Einsteins' leader and the one who pilots Rocket. He is also Annie's older brother.



Leo has red spiky hair, large teal glasses, and green eyes. He wears a black short-sleeved t-shirt which has an orange streak, orange cargo shorts with large pockets, white socks, and orange and black sneakers.


His friends are June, Annie, Quincy, and Rocket. He also has other friends, but some are not human (for example, one of his friends is a bumblebee from Africa). 

Disney Parks

Leo made an appearance as a puppet in Disney Junior - Live on Stage! (back when the Little Einsteins segment was part of the show) located in the Animation Courtyard at Disney's Hollywood Studios.

Also, he made meet-and-greets with people, just like the other Little Einsteins, except Rocket.


  • He is the only character on Little Einsteins to wear glasses.
  • His skills with the baton include the ability to conduct animals (seen in Our Big Huge Adventure, where he conducts cows and The Song of the Unicorn).
  • His main talent is conducting and his most precious object is his conductor's baton; he never leaves home without it.
  • Although he is only six years old, he is tall, in fact, he is taller than Quincy and his little sister Annie (she is the smallest). But June is as tall as him, but although she is tall she is small.
  • It's been said that Leo may have a crush on June and vice versa, but not much evidence has been presented to support this.
    • In the episode "Ring Around the Planet", After Leo got Saturn's ring back home, June walked to him and gave him a big hug; you can see Leo smiling because of the hug. Since good friends hug each other all the time, this is not too much in indicating a crush.
    • June was always the one to comfort Leo when he gets sad, and he has greatly appreciated it.
    • In turn, Leo comforted June when she was feeling down.
    • In "The Glass Slipper Ball", Leo complimented on June's dancing skills and told her she was the best dancer he knew. This comment made June blush and she can't stop smiling. Leo also complimented on June's dress that she wore to the ball, which also made June blush. Although this may seem a little bit crush-like, it’s more said and done in a friendly, non-flirtatious manner.
  • In "Rocket's Firebird Rescue", Leo was granted Music Power and may have it permanently.
  • In "A Galactic Goodnight", Leo says that he uses his baton as a nightlight every night, which helps him fall asleep.
  • In the episode "The Christmas Wish", Leo's wish was a new baton head.
  • He is the only character on Little Einsteins revealed to have a full name: Leonardo.
    • He prefers his friends to call him Leo.


v - e - d
Little EinsteinsLittle Einsteins Theme SongMissionCurtain Call
Main: LeonardoJuneQuincyAnnieRocket

Recurring: FirebirdMelodyBig JetWitch
Deleted: Wolfgang

Season One: "Ring Around the Planet" • "I Love to Conduct" • "Hungarian Hiccups" • "Whale Tale" • "Pirate's Treasure" • "The Birthday Balloons" • "The Legend of the Golden Pyramid" • "Dragon Kite" • "Go West, Young Train" • "Farmer Annie" • "A Little Einsteins Halloween" • "Annie's Solo Mission" • "The Mouse and the Moon" • "The Good Knight and the Bad Knight" • "The Christmas Wish" • "How We Became the Little Einsteins: The True Story" • "Jump for Joey" • "The Northern Night Light" • "O Yes, O Yes, It's Springtime!" • "A Tall Totem Tale" • "The Incredible Shrinking Adventure" • "Duck, Duck, June" • "Rocket Safari" • "Knock on Wood" • "A Galactic Goodnight" • "The Birthday Machine" • "A Brand New Outfit" • "The Missing Invitation"

Season Two: "Quincy and the Magic Instruments" • "Brothers and Sisters to the Rescue" • "The Glass Slipper Ball" • "Annie's Love Song" • "Melody the Music Pet" • "The Puppet Princess" • "Super Fast!!" • "He Speaks Music" • "Hello, Cello" • "Annie and the Little Toy Plane" • "Carmine's Big Race" • "The Great Sky Race Rematch" • "Sleeping Bassoon" • "Rocket Soup" • "The Blue-Footed Booby Bird Ballet" • "Little Red Rockethood" • "The Puzzle of the Sphinx" • "The Wild Goose Chase" • "Annie and the Beanstalk" • "The Wind-Up Toy Prince" • "Mr. Penguin's Ice Cream Adventure" • "Annie, Get Your Microphone" • "The Treasure Behind the Little Red Door" • "The Secret Mystery Prize" • "Animal Snack Time" • "The Great Schubert's Guessing Game" • "Quincy and the Instrument Dinosaurs" • "Build It, Rocket!" • "Melody and Me" • "Music Monsters" • "The Song of the Unicorn" • "Flight of the Instrument Fairies" • "Silly Sock Saves the Circus" • "Go Team!" • "The Music Robot from Outer Space" • "Show and Tell" • "Fire Truck Rocket" • "Rocket the Bug" • "Little Elephant's Big Parade"

Our Big Huge AdventureRocket's Firebird Rescue
Little Einsteins locations
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