Karen

INGGO!!!]]|Karen, in several occasions|undefined Karen is the eponymous protagonist of Karen's World. For a carabao, she has surprisingly proficient English, and is the reason why Inggo's problems are resolved surely.

One of the carabaos in Barangay Makapagkawanggawa, Inggo usually drags her either because of his dependence or just for fun, like in Ready, Set, Ing-GO! and Fill Out the Blanks.

Appearance
Karen is a plump carabao, who can stand without any problem. She has a human face that replaces the carabao head's mouth. She has black horns and hooves, with arms shaped like a penguin's, although she can still write just as well. She has a trapezoid-shaped torso and a waggable tail. Her costume has visible lumps and seams in her arms and legs.

She prefers not to wear human clothing, and generally detests it when Inggo gives her one in Fabulous Mistakes. She wears a detective cap (a brown plaid design) during her Word Detective tenure. She is usually seen reading something, making her blend in the background.

Personality
When she's not working for his farm or having a snack break, Karen acts as a balance to Inggo's immatureness. Considering how often Inggo sits with her, her day is spent most on benefiting Inggo's life, although he frequently clashes. She is quite gullible to what Inggo says, like how in A Promise is a Promise, he lies about Chito's boatmaking activity, but Karen will eventually find out nonetheless, mostly by shaming Inggo for what he's done (Two Wrongs Do Not Make a Right).

She has a very stubborn and strong side when Inggo does not follow her. For example, in Be Like Ninging, Inggo gives up studying in favor of what he wants to do, until he hears the story of Ningning, a girl who cannot afford proper education yet knows more than him. A similar thing happens in With a Smile, where he retires from his chores. The peak is Tractor's World: She fears she will be replaced with a tractor, and goes ballistic based on her predictions.

On the other hand, she has an energetic side, like in Inggo's Big Idea, where they get very invested in a scattered story. A distressed side is explored in the same episode, since the climax of the story reveals a horrid truth.

English Proficiency
Throughout the show, her English skills never slip, as she is mostly monolingual in the show, except for certain situations, like in Inggo on Wheels (Oo nga!). It is unknown where she got her immense knowledge, but she shares it to others when they need it. Her proficiency defines her personality, to the point where it is. Her strict teacher-like status to Inggo is derived from her love of the language.

Inggo
Most of her day is spent most on benefiting Inggo's life, although he frequently clashes. She is quite gullible to what Inggo says, like how in A Promise is a Promise, he lies about Chito's boatmaking activity, but Karen will eventually find out nonetheless, mostly by shaming Inggo for what he's done (Two Wrongs Do Not Make a Right). Most of the time, she is ahead of him since she knows what will happen next to him, often relating to lessons she teaches. She can get a little iffy on Inggo, though, like in the episodes Critical Friends and Tractor's World, where in the former, she only knows part of what happened, although Inggo falls for it too.

Karen will seldom provide to him, but she still has good intentions. In I am Smart!, she realizes why he had a hard time with his assignment, and that he should have done it as a group. Oftentimes Karen will not help Inggo, because of her stubborness and for his sake. In Fabulous Mistakes, she does not define Inggo's troubled words to dispell the unwarranted hate for the Alings, especially ones that teach.

Inggo, despite their arguments, still care for each other. In one episode, Synonyms (Karen's World), Inggo promises her breakfast in the early morning. Karen, however, wants the freedom Inggo and the other humans have in Your Turn, My Turn, since Inggo's committee agreed on a daily curfew for the carabaos.

One recurring gag is Inggo's 'snake prank', where some harmless threat (like a worm) or even nothing is mistaken for a snake, after cowling 'Snake!' Despite her relative competence over Inggo, her ophidiophobia takes over everytime. Think of it as her gullible weak spot.

The kids
Karen has a strong rapport with kids, which is essential for her teaching spree. They gave company to her in Tractor's World, since she felt low after Inggo's newfound tractor interest. She has a wise-like aurora when they ask her questions regarding English. If you also count Inggo's fellow colleagues like Katrina and Rico, she acted friendly and comforting in front of them.

Trivia

 * She appears with new dialogue in every episode except for Say What You Mean, Mean What You Say, probably due to acting rights. The episode mentions that she left to help someone else.
 * She has the only recurring intermission, the Word Detective skits.
 * Compared to Inggo, she is left-handed, like how she holds the food for the Alings in Fabulous Mistakes on her left side. This is confirmed in the intro. That also makes her the only main character to have such a trait.
 * She, out of all ENB characters, has the longest ears.
 * If you think about it, she is also the heaviest character,.
 * She is the only character to have two noses.