HI! If you are interested here is what I found about the meanings behind the names for the LI and MC. Feel free to chim in, write what you think about it, correct what's wrong or give a better explanation to it.
old slavic, composed of vladeti ’’to rule’’ and meru ‘’great, famous’’ (another association of the second element is miru ‘’peace, world’’)
meaning: famous ruler, of great power, peace/world owner
interesting: ruler Vlad III Draulea; the impaler was inspiration for the character Count Dracula; the TV series Young Dracula has a vampire character named Vladimir’’Vlad’’ Dracula who appears as the son of Count Dracula
there is actually nothing about the name Beliath that I found (just a mention of the name in a book called Forbidden Rites: A Necromancer’s Manual of the Fifteen Century among other demon names) so I will write about the closest that I found about and that keeps coming up in the search and that was the name Belial
taken from the hebrew word běliya’al ‘’worthlessness’’ (beli ‘’without’’ and ya’al ‘’value, worth’’)
interesting: in later Christian tradition Belial is used as a name for an evil angel associated with lawlessness and lust
slavic variant of the greek name Iōánnēs taken from the hebrew Yôḥānāh ‘’God is gracious’’
interesting: only on the german and france ML page Ivan is literally named as the Bloodthirsty (der Blutdurstige, le sanguin), on the others he is named as the fiery, the explosive one; the TV series Young Dracula has a character named Ivan Dracula who was known as ,,Ivan the bloodthirsty’’
alternate spelling form of the hebrew name Aharon, which probably originated from Ancient Egypt "aha rw" meaning "warrior lion’’
meaning: (because of the unknown origin it can have various meanings) warrior lion, high mountain, exalted, mountain of strength, enlightened, bearer of martyrs
from the hebrew name eitan that roughly translates to "spiritual strength"
meaning: firm, solid, strong, long lived
from the hebrew Rafa'el ‘’God heals’’ ( rāp̄ā’’he has healed’’ and ēl’’God’’)
meaning: God’s healer, he has healed
interesting: Raphael was the archangel in the Bible who helped Tobias to cure his father Tobit from his blindness (with a fish...), that’s why many instituts and centers for eye problems are dedicated to the archangel Raphael
fromt the old french name Héloïse with an origin in the german Helewidis (heil’’hale, healthy’’ and wid’’wide’’)
meaning: healthy, unscathered and wide
interesting: sometimes the name is also associated with the greek word hēlios’’sun’’
