Don't get me wrong, what is on the wiki is accurate, for the most part, there are just a few things that need to be updated now that there is new material available. Prime example, Jedah not being at full power during the game.
Translation
"Jedah, the master of the Dohma family - The Distressed Lord of Death
The youngest out of the three High nobles.....though he is still over 6000
years old. His liquid body allows him to change into any shape he chooses. He
is able to absorb the souls of others and can instantly increase his ow
powers.
He was always distressed about the future of Makai. He believes that if
Makai left to rule by Belial, it would grow old and begin to decay. Belial
would most likely say that that is the destiny and life. To Jedah, Belial was
being who should not exist. He had always looked for the opportunity to kill
Belial, and waited for the right time to strike.
After the death of Galnan, Jedah had a young confidant named Ozom. Simply
put, he was a gourmet. The reason he came under Jedah was to be able to eat
delicious souls. As a noble, his skills were second class, but his ability to
deceive others were first class. He was a genius in using others. He advised
Jedah about using the gate of Makai. Jedah, being confident in his ability to
absorb souls, agreed to this. He ordered Ozom to break a part of the seal to
open the gate more. When Ozom arrived at the gates, he realized that enormous
powers lied within the gates.
"Even Jedah would destroy himself if absorbs all this power at once."
He see's this as his chance to take over the throne and tells Jedah a lie.
"Due to the little power that came out, I must destroy all the seals....."
After destroying the seals, he ran off to the far reaches of Makai.
He believed that the destruction of Jedah means his rise in power. He also
planned to absorb the left over powers from the incident. This plot had
succeeded. Though Jedah's absorbing powers were greater than Ozom predicted, he
was destroyed due to the sheer amount of powers. Ozom gathered the left over
powers and stored it in the Dohma castle. This is how Ozom became the new
master of the Dohma family. The birth of Emperor Ozom.
100 years later....Jedah was revived in Makai. He felt distressed towards
the crazed Makai, nobles fighting each other and spilling blood. Instead of
anger, he felt pity towards Ozom, who had betrayed him. Jedah had already made
up his mind.
His complete revival and the cleansing of all souls. For this, a
new stage was necessary. A new dimension, the Majigen.
Jedah arrived at Dohma castle and saw Ozom and laid out his hand.
Although
his powers were not yet completely restored, he had enough power to remove
Ozom. Ozom had become a spineless gourmet. Ozom's eye's had fear in them. Jedah
quietly whispers,
"Ozom....I am sorry, but please lend me your powers. Your soul would become the
foundation of Majigen and will help the future of Makai."
The Dohma castle was taken into the dark space along with Ozom. This was the
beginning of his salvation."
http://www.gamefaqs.com/arcade/583724-vampire-savior-the-lord-of-vampire/faqs/25007
Note the bolded, Jedah was weakened. More to come soon.