Venom

Venom (ヴェノム) was a swordsman and Nelson's servant.

Appearance
In the novels, Venom was only described as a dark shadow that appears in the flash.

In the Manga, Venom was a huge man wearing a full plate armor with a fur coat and long cape. More specifically, he wore an armored helmet with two horns protruding from it.

In the Anime, Venom was ordinary man wore an light armor that covers his entire body, with arm and leg guards and papers overlapping around his waist in the front and back. He covers his face with a hat, that looks like a jiāngshī hat on the paper a picture of the Cult of Diablos symbol.

Background
Ten years ago, he managed to summon Olivier, but he lost to him. At some point after that, he become Nelson's subordinate.

Sanctuary Infiltration
On Nelson's orders, he is ordered to kill Archbishop Drake, in order to erase the evidence from Princess Alexia and the Crimson Order before they arrived in Holy Land Lindwurm and successfully escaped from the scene.

When Shadow sudden coming at the Goddess's Trial and left after defeating Aurora, Shadow Garden have arrived to enter the Sanctuary. Epsilon had defeated Nelson's guards and when she states that Nelson will be coming with them inside the gate, he refuses and calls his guard Venom to kill Epsilon. He attempts to cut Epsilon, but she bends to dodges the slash, only the slash ends up cutting her fake slime breasts. Not wanting to be exposed, Epsilon manages to reattach them and quickly defeats him.

Powers & Abilities
Despite Venom's huge body, he could easily launch a surprise attack on Epsilon using his Greatsword. In the anime, he uses a Blade of the Thorns.

Trivia

 * In the anime, several Cult members who serve as security team wear "Venom anime design appearance" and they also wear "men in black" clothes as their disguises.