hey! these are my ideas for redesigning HH characters.
Alastor - he's a huge change cause he's a big mess. First of all, actually making him mixed race, along with a rounder, bigger nose like Phil Lynott, who was a bit of inspiration for him. Curly hair, and actual ears. Instead of scene stripes on his hair, he has a scene striped boater instead. His antennae are shaped like radio antennae since hes a radio demon. Yellows distributed more around his design.

Angel Dust - He actually has 4 pairs of limbs, but in canon he just has a third pair of arms that he does a Stitch thing where he only has them sometimes. I just gave him a second pair of legs instead, as well as mandibles on his mouth to be more spider-like. Also, spider torso.

Husk - he’s a owlbear/owlcat now, with plushie motifs cause he looks like a plushie to me lol. got rid of the tail and wings they just make things too complicated. also he's actually fat now, like a huggable plushie.

vaggie (ugh) - not much changed, i gave her more of a bulkier design and added some muscle definition to her arms. shes an angel, so i tuned her design more blue ad changed the orange in her eyes to blue to match the other angels. red stays, cause i feel like it reflects her changed allegiances.

i think a lot of the designs are helped by removing a lot of superfluous detail and actually giving them some meat to their skinny asses.