Some popular cartoon characters with the letter 'I' include Iron Man in various animated versions. He's a superhero that many kids love. Also, there's Iroh from Avatar: The Last Airbender, known for his wisdom and kindness.
There's also Isabella from Phineas and Ferb. She's a fun and popular character. Another might be Ice King from Adventure Time, who has quite a unique personality.
One popular one is 'Avatar: The Last Airbender'. It has an interesting story and great characters. Another could be 'Arthur', which is educational and fun for kids.
Well, there's the letter 'B' as a bee. It's colorful and buzzes around in the cartoons, making them fun. Also, the letter 'D' as a dog is common, known for its loyalty and playfulness.
One popular example is Scooby-Doo. He's a well-known dog character in cartoons, known for his adventures and solving mysteries with his friends.
Well, one popular example could be Squirrel Nutkin from Beatrix Potter's stories. He's always up to some autumn adventures!
Well, shows like 'My Hero Academia' have characters with all sorts of powers. It's really popular.
You can't forget about Peppa Pig. She and her friends have many lighthearted moments that could include a boop. Also, the characters in 'Zootopia' might have such instances where they boop each other in their fun-filled city adventures.
One such show could be 'Dexter's Laboratory.' Dexter often wears glasses and it's a beloved cartoon. Another is 'Arthur,' where some characters sport glasses too.
Well, there's Pumbaa from 'The Lion King'. He's a chubby character and has a sort of mustache. Also, Mr. Krabs from 'SpongeBob SquarePants' is a bit on the heavy side and has a mustache.
Well, one popular long-haired dog cartoon character is Courage the Cowardly Dog. His wild purple hair is quite memorable.
You might want to check out 'Sailor Moon'. Some of the Sailor Scouts have blue hair. Another option could be 'Adventure Time', where there are characters with blue hair in its imaginative world.