Sally Acorn, reimagined in the styles of Regular Show, Gravity Falls, Star vs. the Forces of Evil, and The Loud House, would be a drastically different character across each iteration. Let's explore each individually:

Sally Acorn in the Style of Regular Show:

• Personality: Her typically heroic and resourceful nature would be dialed down to a more sarcastic, laid-back, and slightly cynical demeanor. She'd likely be prone to absurd situations and non sequiturs, often finding herself embroiled in bizarre schemes with Mordecai and Rigby-esque woodland creatures. Her resourcefulness would manifest as quick thinking in absurd situations rather than grand strategic planning.
• Visuals: Her design would be simplified, with bolder outlines and flatter colors. Her attire might be more casual, perhaps a slightly oversized t-shirt and shorts, possibly with a quirky accessory like a backwards baseball cap or mismatched socks. Her quills would be less refined, perhaps sticking out at odd angles.
• Storylines: Episodes would revolve around mundane tasks gone hilariously wrong, with Sally navigating the absurdities of her woodland home alongside equally eccentric animal companions. The overarching narrative would be lighthearted and episodic, focusing on the humor of everyday life rather than grand adventures.

Sally Acorn in the Style of Gravity Falls:

• Personality: She'd retain her intelligence and resourcefulness, but with a more inquisitive and slightly paranoid edge. She'd be a keen observer, noticing subtle details and uncovering hidden mysteries within her seemingly normal world. A sense of underlying unease and a touch of the supernatural would permeate her character.
• Visuals: Her design would be more detailed and slightly darker, with a hint of gothic influence. Her attire might be more practical and layered, suitable for exploring mysterious locations. Her quills could be styled in a more dramatic fashion.
• Storylines: The narrative would involve uncovering a larger conspiracy or mystery within her world, possibly involving ancient prophecies, hidden artifacts, or strange creatures. The tone would be a blend of mystery, adventure, and dark humor.

Sally Acorn in the Style of Star vs. the Forces of Evil:

• Personality: She'd be more energetic, impulsive, and optimistic, with a strong sense of justice and a willingness to take risks. Her resourcefulness would be expressed through quick thinking and magical abilities. She might have a close-knit group of friends who accompany her on adventures.
• Visuals: Her design would be vibrant and expressive, with a more stylized and exaggerated appearance. Her attire would be more fantastical, possibly incorporating magical elements or unique accessories. Her quills would be more dynamic and expressive.
• Storylines: The narrative would involve epic battles against powerful villains, magical quests, and explorations of fantastical realms. The tone would be adventurous, action-packed, and emotionally resonant.

Sally Acorn in the Style of The Loud House:

• Personality: She'd be one of many siblings in a large, chaotic, and loving family. Her personality would be more grounded and relatable, with a focus on her relationships with her family members. Her resourcefulness would be used to navigate the everyday challenges of family life.
• Visuals: Her design would be simpler and more cartoonish, with exaggerated features and expressions. Her attire would be more casual and less elaborate.
• Storylines: Episodes would focus on the everyday dynamics of her family, with Sally navigating sibling rivalries, family outings, and humorous mishaps. The tone would be lighthearted, heartwarming, and relatable.

In each scenario, Sally's core personality traits – intelligence, resourcefulness, and kindness – would remain, but they would be expressed through the unique lens of each show's distinct style and tone. The resulting character would be a fascinating blend of familiar traits and unexpected twists, offering a fresh perspective on a beloved character.