For a 90gal, I would go with:
1 male squareback anthias (colorful, not shy, and swims around)
2 clowns
1 tomini tang (colorful, eats algae and swims around a lot)
1 one spotted foxface (colorful, eats algae, swins around a lot)
1 leopard wrasse
1 flame hawkfish (quirky characteristics)
1 midas...