Kell

Kell (겔, Gel) is a teammate of Yool who assists him in the capture of Yeon Yihwa and Hong Danhwa.

Appearance & Personality
He has dark grey hair and grey eyes. His face is half covered in mask, and he wears a metallic blue armor. He seems to be augmented with electronic implants that can be seen in his hair. He follows Yool's orders, and is usually quiet and stoic.

Tower of God: Part 3 - Deng Deng
He is first shown in Episode 1 of season 3 as he makes Yihwa faint. He later accompanies Yool to confront Baam, then goes with him to assist in the rescue of Deng Deng.

Power and Abilities
His power and ablities aren't really known yet, but he is strong enough to make Yihwa faint when she is half poisoned.