Nickelodeon
Teenage Mutant Ninja Turtles TMNT Boys Costume Youth T-Shirt(LG, Leonardo)
$17.95on amazon.com · Aug 7, 2026
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Teenage Mutant Ninja Turtles
Leonardo
Leonardo is the responsible one, which in this franchise means he is the character the others resent. The four turtles are named after Italian Renaissance artists — a detail Kevin Eastman and Peter Laird chose partly because it made the parody title even more absurd — and each was given a colour-coded bandana and a distinct weapon, initially so that readers could tell four identical figures apart on a black-and-white page.
- First appearance
- Teenage Mutant Ninja Turtles #1 (1984), Mirage Studios
- Created by
- Kevin Eastman, Peter Laird
- Also known as
- Leo
- Universe
- Teenage Mutant Ninja Turtles
- Appears in
- comics, animation, television, film, games
Who is Leonardo?
Leonardo is the responsible one, which in this franchise means he is the character the others resent. The four turtles are named after Italian Renaissance artists — a detail Kevin Eastman and Peter Laird chose partly because it made the parody title even more absurd — and each was given a colour-coded bandana and a distinct weapon, initially so that readers could tell four identical figures apart on a black-and-white page. That practical solution became the entire merchandising architecture: four characters, four colours, four personalities, four separate toys. Leonardo carries twin katana and the burden of leadership, and the better stories are the ones where his discipline is a genuine liability rather than a virtue. The original 1984 comic is considerably more violent than anything the cartoon that followed would suggest.
Leonardo: the details
- First appearance
- Teenage Mutant Ninja Turtles #1, May 1984, self-published by Mirage Studios
- Created by
- Kevin Eastman and Peter Laird
- The comic was a parody
- A send-up of Frank Miller's Daredevil and Ronin and Marvel's mutant titles, printed in a run of 3,000
- Named after Renaissance artists
- Leonardo, Michelangelo, Donatello and Raphael
- The colours were a practical fix
- Colour-coded bandanas exist so readers could distinguish four identical figures — originally all wore red
- Weapon
- Twin katana, and the character carries the leadership role in almost every version
- Far more violent originally
- The 1984 black-and-white comic is markedly darker than the 1987 children's cartoon
Why Leonardo endures
Part of the most commercially successful independent comic ever self-published, and of a colour-coding system devised to solve a printing problem that became a template for character merchandising.
What Leonardo looks like on a shirt
Signature motif: The blue bandana, green shell, and twin katana
Colour-coded bandanas are the whole system — blue, red, purple and orange identify each brother instantly, and it exists because four identical turtles needed distinguishing on a monochrome page. The blue-on-green pairing works at any size.
Colour-coded bandanas are the system — blue, red, purple, orange, instantly distinguishing four otherwise identical designs. Blue on green works at any size. Four-character group prints are the strongest sellers. Excellent across all size bands.
Leonardo T-shirts
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TEENAGE MUTANT NINJA
Teenage Mutant Ninja Turtles Leonardo Ready for Action T-Shirt
$17.09on amazon.com · Aug 7, 2026
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Popfunk
Popfunk TMNT Teenage Mutant Ninja Turtles Unisex T-Shirt, Leonardo Chest, M
$17.99on amazon.com · Aug 7, 2026
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TMNT
TMNT Ninja Turtles Leonardo Action Shot T-Shirt
$19.99on amazon.com · Aug 7, 2026
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LOGOVISION
TMNT Teenage Mutant Ninja Turtles Leonardo Since, Leonardo Since 1984, XL
$17.99on amazon.com · Aug 7, 2026
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TEENAGE MUTANT NINJA
Teenage Mutant Ninja Turtles Select Your Turtles T-Shirt
$17.99on amazon.com · Aug 7, 2026
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TEENAGE MUTANT NINJA
Teenage Mutant Ninja Turtles Leonardo Since 1984 T-Shirt
$19.99on amazon.com · Aug 7, 2026
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Popfunk
Popfunk TMNT Teenage Mutant Ninja Turtles Unisex T-Shirt, Retro Group, XL
$17.99on amazon.com · Aug 7, 2026
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Buying from outside the United States? Prices shown are amazon.com in US dollars. Links redirect international readers to their local Amazon, where pricing, sizing and availability are shown in local terms.
Price and availability are taken from Amazon at the time shown and can change. The price on Amazon at the time of purchase applies.
Sizes: kids to adult
Leonardo shirts are produced across the full US size range. These links run a live Amazon search filtered to each band, so they show what is genuinely in stock rather than a cached list.
| Band | Ages | US sizes | Search |
|---|---|---|---|
| Toddler | 2–4 years | 2T, 3T, 4T | Search toddler sizes |
| Kids | 4–7 years | XS (4/5), S (6/7) | Search kids sizes |
| Youth | 8–14 years | M (8), L (10/12), XL (14/16) | Search youth sizes |
| Adult | 15+ | S–3XL | Search adult sizes |
US sizing shown. Cut and measurement vary between brands — see the size guide before ordering, especially for youth sizes. Base search: Leonardo TMNT t-shirt.
Who has played Leonardo
| Performer | Production | Year | Type |
|---|---|---|---|
| Cam Clarke | Teenage Mutant Ninja Turtles | 1987 | Voice |
| Nicolas Cantu | Teenage Mutant Ninja Turtles: Mutant Mayhem | 2023 | Voice |
Leonardo T-shirts: common questions
Who created Leonardo?
Leonardo was created by Kevin Eastman and Peter Laird, first appearing in Teenage Mutant Ninja Turtles #1 in 1984 (Mirage Studios).
What does a Leonardo T-shirt usually look like?
The blue bandana, green shell, and twin katana. Colour-coded bandanas are the system — blue, red, purple, orange, instantly distinguishing four otherwise identical designs. Blue on green works at any size. Four-character group prints are the strongest sellers. Excellent across all size bands.
Are Leonardo T-shirts made for children?
Yes — Leonardo appears on our kids pages, and shirts are commonly made from US toddler 2T up through youth XL.
Who has played Leonardo?
Leonardo has been voiced by Cam Clarke (Teenage Mutant Ninja Turtles, 1987), Nicolas Cantu (Teenage Mutant Ninja Turtles: Mutant Mayhem, 2023).
How much does a Leonardo T-shirt cost?
Leonardo shirts we currently track start from around $17.09 on amazon.com. Every price on this page is dated, because they move.
This profile was compiled from published reference material about Leonardo — first appearance, creator credits and production history — and is a secondary source rather than a substitute for the original publication. Where a detail could not be corroborated it has been left out. We do not physically test garments; see how we work for what that means and what it does not.
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