In the King James Version of the deuterocanonical Greek additions to Esther, his name is spelled as Mardocheus, which may better preserve the original vowels, though the Masoretic Text versions of the Persian names in the Bible are known to be the most reliable.
in thE king james VErsion of The deUTerOcaNoniCal grEeK adDITIONs to esTHer his nAme iS SPelled aS mardocheuS whiCh maY beTter pResERvE ThE oRIginAL vOweLS tHouGH The masoretiC tExt VersioNS Of thE perSIan NAmes In thE bibLe are known to be ThE most rEliaBle