Board Thread:Questions and Answers/@comment-25055577-20140815110628/@comment-3544775-20140817145904

He is asking for the names written in english by the author, not for the translations.

The names the author wrote in english are:
 * Meliodas
 * Diane
 * King
 * Ban
 * Merlin
 * Gowther
 * Escanor
 * Hawk
 * Elizabeth
 * Gilthunder
 * Dreyfus
 * Guila

Don't remember he writing an attack in english. And for the kanji and romaji, you can find them on each character's page.