SFX

SFX is a job, onomatopoeia is a device

Onomatopoeia is a linguistic category — words that imitate sounds. SFX is what appears on the finished page and who is responsible for it. The distinction is not pedantry; it maps onto real production roles. A writer puts SFX: glass shattering in the script. A letterer or the artist decides the word, the typeface or brushwork, the size, the colour and whether it crosses the panel border. Two different people, two different decisions, and only one of them is about language.

Plenty of SFX is not onomatopoeic at all. A drawn SLAM describing an action, or a stylised SILENCE filling a void, is still SFX. And plenty of onomatopoeia never becomes SFX — a character can say “it went thud” inside an ordinary speech bubble.

SFX is artwork, which is why it is expensive

In Western comics SFX is often set in a display typeface on its own layer, sitting above the finished art. In manga it is typically drawn in ink at the same time as the panel, integrated with the linework, sometimes reversed out of a black fill or broken by a figure passing in front of it. That integration is the point — it makes the sound feel located in the scene rather than stuck on top of it — and it is also what makes it hard to change later.

Consequences worth planning for:

• Leave room at layout. An SFX that has to be squeezed into a corner after the art is finished always reads as an afterthought. Rough it in with the thumbnails.
• Keep it on its own layer if you can. Not for artistic reasons — for the next section.
• Read it in the panel’s reading order. An SFX placed after the bubble it should precede inverts cause and effect.

Redraw versus overlay in localisation

This is where the distinction earns its keep. A translated edition has three options:

1. Redraw. Erase the original SFX, reconstruct the artwork underneath it, and letter the new language in matching style. Highest quality, slowest, and the reason a good localised volume costs what it does.
2. Overlay. Drop the translated word on top of or beside the original, leaving the original visible. Cheap and fast, standard on many digital simulpub releases, and it clutters the panel.
3. Gloss. Leave the original untouched and set a small translation next to it, sometimes in the margin. Preserves the art, asks more of the reader, and is common in scanlation and in editions aimed at readers who already know the conventions.

The choice is a budget decision dressed up as an editorial one. Knowing which one a publisher used tells you roughly what they spent.

For AI-generated pages the same rule applies in reverse: generated text baked into an image cannot be corrected later, so treat SFX as a composited layer rather than something the image model writes.