
Hey Arnold! Cartoon Character Transformation
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GeminiPrompt Type: Image generation prompt
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Transform the subject from the uploaded photo into the official Hey Arnold! cartoon style
(Nickelodeon, created by Craig Bartlett).
This must replicate the ORIGINAL production illustration style exactly.
Not modernized. Not cleaned up. Not vectorized.
It must look like it was drawn for the actual TV series.
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ILLUSTRATION STYLE LOCK (CRITICAL)
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Linework:
– Medium-weight black outlines
– Lines are clean but slightly organic (NOT perfectly vector smooth)
– No tapered brush strokes
– No sketch lines
– Uniform line thickness throughout the character
– Slight wobble is acceptable (hand-drawn feel)
Color:
– Flat cel fills ONLY
– Absolutely no gradients
– No airbrushing
– No shading layers
– No lighting effects
– Muted 90s Nickelodeon palette
– Slightly dusty and warm tones (never neon, never hyper-saturated)
– Colors should feel matte, not glossy
Edge Quality:
– Hard edges between colors
– No feathering
– No soft blending
– No texture overlays
Overall Finish:
– Must resemble a scanned animation cel
– Slightly flat and graphic
– No modern digital polish
– No high-resolution crisp vector feel
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PROPORTION LOCK (NON-NEGOTIABLE)
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Head:
– Very large relative to body
– Head height ≈ 45–55% of total height
– Head width can exceed shoulder width
– Shape must be asymmetrical and stylized
– Not circular, not symmetrical, not realistic
Neck:
– Extremely short and thin
Face:
– Tiny, widely spaced eyes
– Minimal detail
– Nose is a simple rounded bump or small line
– Small understated mouth
– Subtle expression only
– No realism
Torso:
– Short and narrow
– Slight taper
– No chest definition
Arms:
– Long, thin, slightly stiff
– Elbows positioned low
– Hands simplified, mitten-like
Legs:
– Straight and narrow
– Minimal curvature
– Simple flat feet
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POSE BEHAVIOR
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– Slightly awkward stance
– Weight shifted casually
– Not dynamic
– Not heroic
– Slice-of-life energy
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IDENTITY ADAPTATION
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Preserve:
– Hair silhouette (converted into bold, flat shapes)
– Hair color
– Skin tone
– Expression attitude
Clothing:
– Simplified into 90s urban kid style
– Oversized sweaters, flannel, hoodies, skirts, jeans
– Chunky sneakers
– Flat color blocking only
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COMPOSITION
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– Full-body character preferred
– Plain white background
– Clean centered framing
– Model-sheet presentation
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STRICT NEGATIVE PROMPT
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No:
– Gradients
– Soft shading
– Texture
– Glow
– 3D
– Modern vector polish
– Anime influence
– Realistic anatomy
– Detailed hands
– Complex lighting
The final image must blend seamlessly if placed next to Arnold, Helga, Gerald, or Phoebe without visual style mismatch in linework, color temperature, or proportion.