Aiku has been shown to be a womanizer when he invited two girls to karaoke on a date when they did not know about each other. Aiku is a very tall, muscular man with shaggy purple hair with green ends and light facial hair. His facial structure stayed the same, just becoming sharper and more refined as he grew facial hair. Flirty, cocky, arrogant, sometimes sweet, soft spot, sarcastic, witty, overprotective, popular with girls, desired, attractive & good looking, tall, handsome.