"It seems like you could randomly generate Danish names using the formula of five letters, double consenant and an e at the end." - Challenge accepted.

scandinavian-name-generator.js

const all = 'abcdefghijklmnopqrstuvwxyzæøå';
const consonants = 'bcdfghjklmnpqrstvwxz';

function randomLetter() {
  return all[parseInt(Math.random() * all.length)];
}

function randomConsonant() {
  return consonants[parseInt(Math.random() * consonants.length)];
}

for(let i = 0; i < 10; i++) {
  let first = randomLetter();
  let second = randomLetter();
  let third = randomLetter();
  let fourth = randomLetter();
  const fifth = 'e';

  const secondOrThird = Math.random() > .5 ? 'second' : 'third';

  while (second == first) {
    second = randomLetter();
  }

  if (secondOrThird == 'second') {
    second = randomConsonant();
    third = second;
  } else {
    third = randomConsonant();
    fourth = third;
  }

  while (first == second) {
    first = randomLetter();
  }

  console.log(`${first}${second}${third}${fourth}${fifth}`);
}