From Black Desert Wiki
Easily over 10 feet tall he uses ground smashing attacks to deal heavy damage. He can dual wield with his massive axes. Unlike other classes, this one does not seem to have a female counterpart.
The Giant can also transform into a beast like monster for a limited amount of time. During this transformation he uses his claws to attack enemies in rapid successive action.
He can also use electrical charge attacks.
The giant was originally called the "Predator" until Pearl Abyss decided that it was too confusing and instead changed it to Giant.