Some cartoon characters stand out because they feel original, optimistic, or a little odd in the best way. Many of those memorable names begin with the letter O. When you explore cartoon characters that start with O, you’ll quickly notice a mix of out-of-the-box heroes, lovable outsiders, and iconic personalities that animation fans remember for years.
The letter O appears across every style of animation.
- You’ll find adventurous heroes.
- Funny side characters.
- Quiet thinkers and powerful leaders.
From Disney and Pixar classics to Cartoon Network, Nickelodeon, and anime favorites, O-named characters span generations. I’ve spent years organizing and studying animated characters across major studios, and this guide is designed to make discovery simple and enjoyable.
Below is a carefully curated list of characters that start with O, grouped for quick scanning and clarity.
Let’s explore them.
Popular Cartoon Characters That Start With O
These are some of the most famous and widely searched cartoon characters that start with O:
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Olaf – The cheerful snowman from Frozen
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Odie – Garfield’s loyal dog
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Optimus Prime – The heroic Autobot leader
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Oscar – The fast-talking fish from Shark Tale
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Olive Oyl – Popeye’s iconic partner
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Obelix – The strong Gaulish warrior
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Oswald the Lucky Rabbit – Early Disney icon
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Otis – The carefree cow from Barnyard
Disney Cartoon Characters That Start With O
Disney has created many memorable characters whose names start with O.
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Olaf (Frozen)
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Oswald the Lucky Rabbit (Disney shorts)
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Oliver (Oliver & Company)
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Oaken (Frozen)
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Otto (Robin Hood)
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Octavius (The Rescuers)
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Oberon (Gargoyles)
Pixar Characters That Start With O
Pixar films also feature notable characters beginning with O.
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Otto (Cars 2)
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Onward characters (Onward)
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*Owen Grady (animated LEGO adaptations)
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Otis (Cars – minor character)
Cartoon Network & Nickelodeon Characters That Start With O
Many popular TV cartoon characters also start with O.
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Owen (Total Drama)
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Omi (Xiaolin Showdown)
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Octavia Goetia (Helluva Boss)
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Otto Rocket (Rocket Power)
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Olivia (Paper Girls – animated appearances)
Anime & Other Popular Cartoon Characters That Start With O
This section includes anime and globally recognized animated characters.
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*One Punch Man (Saitama)
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Ochaco Uraraka (My Hero Academia)
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Obito Uchiha (Naruto)
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Osamu Dazai (Bungo Stray Dogs)
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Oshawott (Pokémon)
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Orihime Inoue (Bleach)
Why Are Cartoon Characters That Start With O So Memorable?
Based on animation trends and viewer behavior, characters starting with O often represent:
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Optimism and warmth
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Original character design
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Outsider perspectives
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Overcoming personal limits
FAQs
What are some cartoon characters that start with O?
Popular examples include Olaf, Odie, Optimus Prime, Oscar, Oliver, and Oswald the Lucky Rabbit.
Are there Disney cartoon characters that start with O?
Yes. Disney characters starting with O include Olaf, Oliver, Oswald the Lucky Rabbit, Oaken, and Otto.
Which cartoon character starting with O is the most famous?
Olaf and Optimus Prime are among the most famous cartoon characters starting with O due to their global recognition.
What are some female cartoon characters that start with O?
Female cartoon characters starting with O include Olive Oyl, Ochaco Uraraka, Orihime Inoue, Octavia, and Olivia.
What are some male cartoon characters that start with O?
Male cartoon characters starting with O include Olaf, Odie, Optimus Prime, Oscar, Oliver, and Obelix.
Final Thoughts
Cartoon characters that start with O include some of the most original, optimistic, and iconic figures in animation.
If you enjoy discovering characters alphabetically, you can continue with our Cartoon Names guide or move on to the next letter in the series.
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