BACKGROUND
The Leviathans Chapter are characterized by their natural affinity to water. This because of the great Lagiacrus which roam the seas of Pandoris II, mighty predators who are at the top of the aquatic food chain. This means that a Brother-Marine from the Leviathans is one of the best Space Marines available, due to extensive training.

They are pure Space Marines; noble, loyal, and devoted to the defence of Mankind. Due to this, their attempts to destroy those who threaten Humanity are extremely effective - each Marine would rather give their own life than allow innocents to be killed.