Venom

Venom (ヴェノム) was a swordsman known as the Wandering Swordsman (流浪るろう の 剣士けんし) and Nelson's servant working as the Executioner (処刑人しょけいにん) for the Cult of Diablos.

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 a 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.

Personality
Little known about Venom's personality, other than that he was a taciturn and composed individual to his profession, who is willing to follow his superior's orders to fulfill his mission.

Background
Ten years ago, Venom managed to summon Olivier on his duel at Goddess' Trial, but he lost to him. At some point after that, Venom become Nelson's subordinate and joined the Cult of Diablos as their executioner.

Sanctuary Infiltration
On Nelson's orders, Venom was 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. Venom 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 Venom.

Powers & Abilities
Venom possessed a great ability that can even trick one of the Seven Shadows, Epsilon and capable to attack her with his fast movements. In the manga, Venom could easily launch a surprise attack on Epsilon despite his huge body.

Equipment
In the manga, Venom using a Greatsword. While 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.