The information in this article is from the fan game The Silver Lining and is therefore not canon.
The Vines are clinging vines on the Isle of Wonders (unofficial). They grow clinging to the side of the wall between the Isle of Wonders garden, and Chessboard Land. They blocked access to a key needed to open a lock on the gate into the land. Graham sprayed them with a bottle of salt water to cause them to wilt. He hoped he hadn't hurt the vines permanently.
Behind the scenes[]
The character is based on the clinging vines of KQ6. Its chat box names it simply "Vines", but describes it as the 'clinging vines'.