The artist on her giant slugs at Tate Britain, why artists thrive in Glasgow – and how the name Monster has stuck… The artist Monster Chetwynd , 45, brings an odd bit of seasonal cheer to London this winter with two giant luminous slugs slithering around the main entrance of Tate Britain . Born Alalia Chetwynd, she studied anthropology before painting. Chetwynd, who changed her first name to Sp...