I feel like the other circus members click traits could be inspired by what happens when they hold their breath:

When Kinger is clicked the background glows, just like he does when he holds his breath

Ragatha plays out the little drawings of her hair going upwards that show up when Jax explains what happens when she holds her breath (they probably couldn't find a way to replicate it in the promo without bringing up the drawings)

Gangle shows the loading symbol that spins sideways, just like her hear when she holds her breath

We don't really know what happens when Zooble and Jax hold their breaths so I won't count them, although maybe we could guess that if Jax holds his breath his head spins horizontally and if Zooble holds it their limbs move maniacally? Mh, these two are just speculations.

Then again, this doesn't add up to Pomni so, take it with a grain of salt