Little Yoon

Little Yoon (윤말랑, Yoon Malang) is a member of the Fluffy Dwarves tribe living as outcasts on the outskirts of the 49th Floor.

History
He lives with Yeon Woon and seem to be quite close to him.

Tower of God: Part 3 - Deng Deng
Little Yoon helped Hatsu and Ship Leesoo with convincing Devy to give them Yeon Woon's hammer, by acting as if his family was murdered and he needed it for revenge. He also got the honour of waking up Khun Aguero Agnis by hitting him with the hammer on the chest.