This character has a trident.
A trident is a three-pronged spear. It is used for spear fishing and was also a military weapon.
Tridents are featured widely in mythical, historical and modern culture. The sea god Poseidon or Neptune is classically depicted bearing a trident. Note that a trident is not a pitchfork.
As a weapon, the trident was prized for its long reach and ability to trap other long-weapons between prongs to disarm their wielder. In Ancient Rome, in a parody of fishing, tridents were famously used by a type of gladiator called a retiarius or "net fighter". The retiarius was traditionally pitted against a secutor, and cast a net to wrap his adversary and then used the trident to kill him.