Three heads do what more adjectives can't
Three snarling heads fanned from one point read as far more vicious than one head drawn with more detail, because the intensity here is structural, not descriptive.

Three dog heads, fanned outward from one point like spokes. The middle one stares straight out. The two either side are in profile, facing away from the centre, jaws wide, spiked collars, jagged red lightning cracking behind all three.
One animal never had three heads. This one does, and that's the entire design.
Why three heads instead of one head drawn more intensely?
Because doubling the detail on a single head is a much smaller move than doubling the number of heads.
A single dog's head, however carefully drawn, is still one animal doing one thing. Fan three heads out from a shared point and the print stops describing an animal and starts describing something that couldn't exist — which reads as considerably more threatening than any amount of extra snarl on one face. It's a structural change rather than a stylistic one, and structural changes move the needle further.
Why fan the heads outward instead of lining them up?
Because a row of three heads reads as three separate dogs, and a fan reads as one thing with three heads.
Radiating outward from a shared point keeps the collars, the necks and the lightning behind them converging on a single axis, so the eye reads one figure rather than a group portrait. The middle head facing straight out and the flanking pair turned outward in profile is the version of that axis that reads fastest — the composition explains its own geometry before anyone has time to count.
Is the intensity coming from the myth, or from the details on each head?
The details. Cerberus supplies the shape of the idea — three heads on one body — but the actual threat in the image is a list of concrete things: a spiked collar with the chain drawn taut, oversized fangs, eyes with no pupils in them, lightning behind rather than empty space. The same principle runs through getting words onto a shirt at all — a named object does the work an adjective only gestures at. Take away the collars and the fangs and "three heads" on its own is a diagram, not a threat.
Does referencing a three-headed dog from mythology need anyone's permission?
No. Cerberus is a figure from Greek mythology, centuries past anyone owning it, and a design built from a myth doesn't quote a company, a studio or a living artist's specific character. Nothing on this shirt names a real product or borrows anyone's actual artwork — every collar, colour and bolt of lightning here was drawn for this design alone.
Does the same trick work with fewer or more heads?
It scales, and this collection has both ends of it. One head, cropped tight at the neck is the plainest version — a single animal, no myth required. Two heads, mirrored and facing each other sit between the two: a real animal count, arranged so the pair itself becomes the subject. Three is where the count stops describing a real dog and starts describing an idea, which is the whole reason it's the loudest of the three.
Doesn't three heads risk looking cluttered rather than fierce?
It would, if the heads didn't share a single point of origin.
Clutter happens when several things compete for attention with no relationship to each other. Fan three heads from one shared axis, with the same collar, the same eyes and the same fang shape repeated across all three, and the repetition reads as one design decision rather than three separate ones. What keeps it legible is exactly what would ruin it if it were missing — the shared geometry.
Does it print well?
Yes, with cream, red and gold on black doing three distinct jobs: cream for the fangs and highlights, red for the eyes and the lightning, gold for whatever's meant to catch the light. Three inks is near the top of what a design like this needs — a fourth would mostly be splitting one of those jobs in half. Fine linework survives at this scale because the print fills most of the chest; shrink the same artwork down and the crosshatching in the collars would be the first thing to go.
How do I get one made?
Describe it at JustOG — how many heads, the collars, what's crackling behind them. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.
Designs other people have published are in the shop.
Three heads, one collar pattern repeated three times. Nobody counts past the first glance.