Silvius Brabo, here as a statue on top of the Brabo Fountain at the Grote Markt in Antwerp, is a mythical Roman soldier who is said to have killed a giant called Druon Antigoon. This giant terrorised the people of the city by asking money from them when they passed the bridge of the river Scheldt. When they didn´t want to or couldn´t pay, he cut off their hand and threw it in the river.
Brabo then cut off the hand of the giant, and the statue shows how he threw it into the river.
Later this story was also used to explain the name Antwerp, meaning Hand Werpen in Dutch or Hand Throwing in English.