Teb

Teb (탭, Taeb) is one of the guards at the Wall of Peaceful Coexistence.

History
He has known Khane for some time, given how they interact with each other. However, their relationship is unknown.

Appearance and Personality
He has blue-gray skin with pointy ears. His eyes and hair is black.

Powers and Abilities
He wields a Needle, but how proficient he is at using it is unknown.

Tower of God: Part 3 - The Wall with a Sleeping Forget-Me-Not
He arrested Khane and brought her to the town square for a trial, on the orders of Koer. After Khane fought back agaisnt the guards he was shown as quite scared of her power and it assumed that he was beaten by her. However, their fight happened off-screen.