Herbert Powell is Marge Simpson's older brother and one of the earliest characters to have blue hair in the show. He is known for his slicked-back blue hair and his failed business ventures. He first appeared in the episode "Oh Brother, Where Art Thou?" where he was introduced as Homer's brother and owner of a successful car company. However, his business soon went bankrupt and he ended up living in a rundown apartment. Despite his misfortunes, Herbert is a kind-hearted and well-meaning character who often tries to make amends with his family. He has a close relationship with his sister Marge and often turns to her for advice. While he may not have found success in the business world, his presence in the show always brings a touch of humor and heart.1. Marge Simpson's brother, Herbert Powell
Known for his catchphrase "Worst. Episode. Ever.", Comic Book Guy is a beloved character among fans of The Simpsons. He is a stereotypical comic book nerd with a passion for collecting and criticizing pop culture. His real name is Jeff Albertson and his blue hair is a nod to the character of Wolverine from the X-Men comics. Comic Book Guy is often seen working at his store, The Android's Dungeon, and is known for his sarcastic and condescending attitude. However, he is not a one-dimensional character and has been shown to have a softer side, especially when it comes to his love for comic books. He may not have many friends, but he has definitely won the hearts of The Simpsons viewers.2. Comic Book Guy
With his wild blue hair and lab coat, Professor Frink is easily recognizable as the resident mad scientist of Springfield. He is known for his exaggerated mannerisms and tendency to overcomplicate things. His inventions often cause more harm than good, but that doesn't stop him from being one of the most lovable characters in the show. Despite his genius, Professor Frink is often depicted as socially awkward and struggles to connect with others. However, his quirky personality and lovable goofiness make him a fan favorite. He may not have the best luck with his experiments, but he never fails to make us laugh.3. Professor Frink
Disco Stu is a recurring character in The Simpsons known for his love of disco music and his iconic blue afro. He is often seen wearing a leisure suit and dancing to the beat of his own drum. His catchphrase "Disco Stu doesn't advertise!" has become a popular reference among fans. Despite his flamboyant appearance, Disco Stu is a kind and gentle character who is always willing to lend a helping hand. He may not be the most prominent character in the show, but his memorable presence has made him a beloved member of the Springfield community.4. Disco Stu
Cletus Spuckler is a hillbilly character with a thick Southern accent and a head full of blue hair. He is often seen with his wife Brandine and their many, many children. Cletus and his family live in a dilapidated shack in Springfield and are known for their colorful antics and eccentricities. Despite his rough exterior, Cletus is a loving and devoted husband and father. He may not have much, but he makes the best out of what he has and always manages to put a smile on our faces. His blue hair may be wild, but his heart is pure gold.5. Cletus Spuckler
Groundskeeper Willie is the hardworking and gruff Scottish janitor at Springfield Elementary School. He is known for his thick Scottish accent, his love for haggis, and of course, his wild blue hair. Willie is often seen wearing a kilt and brandishing a rake or shovel. Despite his tough exterior, Willie has a soft spot for the students of Springfield Elementary and often goes above and beyond to protect them. He may not have the best luck with his job, but his determination and fierce loyalty make him one of the most beloved characters in the show.6. Groundskeeper Willie
Hans Moleman is a recurring character in The Simpsons known for his extreme bad luck and his iconic blue hair. He is often seen as a background character, but his misfortune always manages to steal the spotlight. He is known for his catchphrase "I was saying Boo-urns" and his many unfortunate accidents. Despite his constant misfortunes, Hans is a beloved character among fans for his endearing personality and his resilience in the face of adversity. His blue hair may be a small detail in the show, but it is just one of the many reasons why we can't help but root for this underdog.7. Hans Moleman
Sideshow Bob is the former sidekick of Krusty the Clown and one of the most infamous villains in The Simpsons. He is known for his long, curly blue hair and his deep, sinister voice. Sideshow Bob is often seen plotting to get revenge on Bart Simpson for foiling his many evil schemes. Despite his villainous ways, Sideshow Bob is a well-educated and cultured character who often references literature and classical music. This, along with his iconic blue hair, makes him stand out among the other characters in the show. Love him or hate him, Sideshow Bob is a memorable addition to The Simpsons universe.8. Sideshow Bob
Krusty the Clown is the beloved host of the Krusty the Clown Show and one of the most recognizable characters in The Simpsons. He is known for his bright blue hair, his trademark laugh, and his catchphrase "Hey hey!". While he may seem like a happy-go-lucky character on the surface, Krusty has a troubled past and often struggles with his personal demons. Despite his flaws, Krusty is a beloved figure in Springfield and is adored by children everywhere. His blue hair may be a reflection of his clown persona, but it is also a symbol of his larger-than-life personality and the joy he brings to the show.9. Krusty the Clown
Snake Jailbird is a recurring character in The Simpsons known for his criminal activities and his blue hair. He is often seen as a background character, but he has made a lasting impression on fans with his tough, streetwise attitude and his signature blue hairdo. Despite his criminal record, Snake has a soft spot for his partner in crime, his girlfriend Gloria. He may not be the most upstanding citizen, but his blue hair and his tough guy persona make him a memorable and entertaining character in the show.10. Snake Jailbird