'Gummy' is a builder hired to build the Tower of Life, but who went on strike as the crew were suspicious of their employers' motives.[1] He spends his time playing rock-paper-scissors with his fellow builder 'Black-eye', having won 50 games each.[2]
During the quest Tower of Life, he can be approached about obtaining pieces of the builder's costume. He refuses to hand any over, but claims he lost a pair of trousers while drying them by the shore. A pair of scruffy trousers can be found by searching the plants southeast of the Tower.
He can be pickpocketed for 8 Thieving experience, the same as a man, and a triangle sandwich.

'Black-eye' and 'Gummy'