A Little Mermaid display becomes stronger when it includes conflict. Ariel alone brings curiosity, romance and transformation. Ursula brings danger. King Triton brings authority and family tension. Together, those figures let a shelf tell the whole emotional arc of the film, which is why Little Mermaid Disney Traditions scene figurines can be so satisfying for collectors.

Use Ursula as the darker anchor
Ursula's shape and colour make her a natural anchor. Place her slightly forward if the piece is wide, then let Ariel figurines bring brighter colour nearby. If the Ursula piece already includes Ariel, treat it as the centre and keep smaller supporting characters from crowding the scene.
Where King Triton fits
King Triton changes the display from a simple hero-versus-villain arrangement into a family story. He represents protection and authority, which makes Ariel's deal with Ursula feel more meaningful. Position royal sea pieces to one side rather than hiding behind Ursula, so each role remains readable.

Colour zones for a richer shelf
Try building in zones: sea greens and turquoise around Ariel, purple and black around Ursula, gold or royal details around Triton. The display stays cohesive because every colour belongs to the underwater world, but each character keeps a distinct role.
Supporting characters with purpose
Flounder and Sebastian soften the shelf and belong close to Ariel. Do not bury them around Ursula where they confuse the story. Keep friendship near Ariel, authority near Triton, and danger near the sea witch. That simple logic makes The Little Mermaid figurines feel curated rather than crowded.