A reference for present and future fanfiction writers who want to capture Helga’s voice authentically. She punches her words with heavy emphasis and peppers her dialogue with slang from every era, often in the same sentence.
And yes, I myself actually use this for my fan-fiction so I can make sure to always stay true to Helga. If I am missing anything, let me know.
* a maroon (what a maroon) 
* Lame-Brain (April Fools)
Referring to Rhonda Wellington Lloyd
* Poor twisted little freak
* Throw pillow (calling him soft)
Classic Helga Exclamations:
* Sheesh (usually with an eye-roll)
* Hoo-Dee-toidy or spelled Hoity-toity! (mocking someone fancy)
* Funny farm (Crazy house)
* Buttinski (usually throws it out when someone’s butting into some's business, she has called Arnold this)
* Compadre (she has said this)
* Yutz (Yiddish word for foolish / annoying or obnoxious ) 
* “Oh sure, because that’s a great idea…”
* “Oh, for the love of Pete.” (Bob says this too)
* Give me a break! (To Big Patty)
* "If you like _____" (to Big Patty about Arnold but could be for anything)
* "Yeah, you got a problem with it?" (To Stinky: Helga and the Nanny)
* "Come on, come on" (when she's being impatient)
Helga’s Secret Soft-Side Phrases
* “Oh, Arnold… my beloved…”
* “How I despise him! And yet… how I love him.”
* “If only you knew how I feel about you"
* “Oh, orzo-shaped Prometheus"
* "Oh, Arnold! So kind, so ______"
Over-the-Top Drama Queen Lines
* “Well la-dee-da, isn’t that just peachy"
* "What is the MATTER with you?"
* "You’ll have to answer to “Ol’ Betsy.” And the five avengers"
* I am NOT (action)—I can’t believe (action) I'm actually (describe what she is doing)
* “Oh, criminy! I’m a basketcase.”
* Training bra wearing bimbo (Summer Love)
• Mom / Dad (used selectively, depending on emotional tone)
Things Helga COULD say and still be in character:
* “Not my circus, not my monkeys"
* “Don’t strain yourself thinking, Hair-Boy.”
* “Step aside, amateur hour’s over.”
* “You’re about as subtle as a marching band, Get outta my way already!”
* “Mind your own beeswax, you little buttinski!”
* “Criminy, Football Head, don’t be such a buttinski!”
* “I’m the punchline in my own tragedy.”
* Ninny (Stop being such a Ninny)
* “Well, that went exactly as I predicted… terribly.”
*“Yes, because that worked out so well last time.”
* “Why must my heart betray my better judgment?”
* “This scene needs better lighting and fewer idiots.”
* “Add it to the list of my personal tragedies.”
Note: Helga often makes literary and cultural references which are a bit strange for someone her age, such as saying "Et tu, Phoebe?" in "Helga's Makeover",
", a reference to Julius Caeser supposedly saying "Et tu, Brutus?" during his assassination, as well as mentioning Fortuna, a Roman Goddess of Luck. She also tends to have her dreams in paintings (most famously "The Persistence of Memory" in "Olga Comes Home", although she doesn't recognize it). This reveals that Helga has an interest in history, literature and art, which makes sense considering her artistic side.
Classic Exclamations that has been said in the show by other characters:
- Holy mackerel! (Grandpa)
- “Jumpin’ Josephat!” (Grandpa)
- Never eat raspberries (Grandpa)
- Don't go in there for awhile (Grandpa)
- I have no idea? (Grandpa)
- I'm just a silly old coot (Grandpa)
- What in the tarnation? (Grandpa)
- Oh with your little boyhood problems (Grandpa)
-Back in my day, we didn’t have_____ (Grandpa)
- You think that’s tough? Lemme tell you about the (winter of 1948) (Grandpa)
- That reminds me of a time... (Grandpa)
- “I’ve lived a long life, kid, and I’ve learned one thing: never trust a guy with _______” (Grandpa)
- Poppycock! – nonsense (Grandpa)
- Balderdash! – ridiculous talk (Grandpa)
- Malarkey! – lies or foolishness (Grandpa)
- Great Caesar’s ghost! – surprise/shock (Grandpa)
- You nincompoop! – fool (Grandpa)
- “Actually, the data suggests otherwise.” (Phoebe)
- “Helga, that’s not entirely logical.” (Phoebe)
- “Statistically speaking…”(Phoebe)
- “I think we should consider all outcomes.”(Phoebe)
- “That doesn’t seem very ethical.”(Phoebe)
- skedaddle (Grandpa / Sid)
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