Rapmon: 'Root word of something you're good at/hobby' + MONSTER

Jin: 'Favorite Color' + Princess

Jimin: 'Take first syllable of your name and repeat it, hence make it sound cuter'

Suga: 'name something the same color of your skin that can be found on your fridge or kitchen then take the last letter'

JHope: 'Take first letter of your name' + 'A positive adjective that starts with the first letter of your name'

Jungkook: 'Color' + 'Favorite Food'

V: 'pick any letter in the alphabet that you like'