Emperor's Children - Legion Fleet: The Emperor's Children are known to have possessed the following vessels in their Legion fleet at the time of the Horus Heresy:Pride of the Emperor (Gloriana-class Battleship) - Flagship of Primarch Fulgrim and the IIIrd Legion.Firebird (Assault Ship) - Fulgrim's personal, custom-designed assault ship.The Agony and the Ecstasy (Battle Barge)Callidora (Battle Barge)Proudheart (Battle Barge, modified Dictatus-class Battleship) - Flagship of Lord Commander Eidolon.Erewhon (Emperor-class Battleship)Ravisher (Avenger-class Grand Cruiser) - During the Horus Heresy, the Ravisher was the flagship of battle group Jewel Shard, led by Legion Consul Azael Konenos, Orchestrator of the Kakophoni.Andronius (Strike Cruiser) - The Andronius, sometimes also called the Andronicus, harboured Chief Apothecary Fabius' personal laboratory in which he first began his experiments to "improve" upon the Astartes' genetic template which would ultimately lead to the creation of the very first Noise Marines and countless other genetic atrocities. The Andronius was also sometimes used as a secondary flagship for the Legion. The Andronius was commanded by Lord Commander Eidolon during the early stages of the Horus Heresy, it led the Emperor's Children contingent in the Battle of Istvaan III. In its original form, it held the Gallery of Swords which ran the length of the warship. It had a transparent roof and was lined with hundreds of statues to honour the heroes of the Legion. Following the Legion's change of allegiance, these statues were altered, some of them being crudely modified to resemble bull-headed monsters. Following Fulgrim's order to pursue genetic experimentation on the Astartes of the Legion, Apothecary Fabius conducted his work from a biomedical research facility located below the Gallery of Swords, accessed through a hidden entrance contained within a huge mosaic in the Central Apothecarion depicting Fulgrim's victory at Tarsus. The Andronius was destroyed by the Sisypheum while trying to dock with the Iron Hands vessel in order to board it, its hull torn apart as the Sisypheum rammed it with phenomenal speed.Longinus (Strike Cruiser)Stealth (Strike Cruiser) - A vessel sometimes used by Fulgrim.Aquiline (Cruiser, unknown class) - With the Proudheart, the Aquiline, Excessive, Infinite Variety and Mortal Splendour formed the heart of Lord Commander Eidolon's fleet at the Battle of the Kalium Gate and the track for the Vth Legion.Excessive (Cruiser, unknown class)Infinite Variety (Cruiser, unknown class)Mortal Splendour (Cruiser, unknown class)Suzerain (Cruiser, unknown class) - IIIrd Legion vessel charged with the protection of the Memnos convoy which came under attack from the White Scars Legion.Fulgrim's Virtue (Escort)Golden Mean (Escort) - Escort of the Callidora.Infinite Sublime (Escort) - Escort of the Callidora.Quarzhazat (Lunar-class Cruiser, Halcyon variant) - This vessel was the flagship of Kasperos Telmar, the "Radiant King."Pulchritudinous (Lunar-class Cruiser, Halcyon variant) - This Lunar-class Cruisaer was constructed in the Martian orbital shipyards and was commanded by Fabius Bile. It was known by Telemachon as "the Fleshmarket." The vessel was taken by the Black Legion at the Battle of Harmony during the Legion Wars and was the site of the duel where Ezekyle Abaddon slew Bile's clone of Horus. By this point, the vessel was a laboratory of genetically-engineered atrocities filled not only with mutants and other horrors but clones of the other Primarchs. After its capture by the Black Legion, the ultimate fate of the Pulchritudinous remains unknown.Vesalius (Gladius-class Frigate) - The Vesalius was a Gladius-class Frigate captured and renamed by Fabius Bile. Since coming into his possession it has undergone substantial modifications with captured xenotech and other heretical technologies, giving its governing Machine Spirit (artificial intelligence) a level of sentience bordering on Abominable Intelligence.Herald of Pain (Unknown class) - The Herald of Pain was the flagship of Excrucias, known as Excrucias the Flawless, a Chaos Lord of the Emperor's Children.Sybarite (Heavy Cruiser, unknown class) - The Sybarite served the Emperor's Children during the battles of the Horus Heresy.Cataclysm of Faith (Space Hulk) - The Cataclysm of Faith was a Space Hulk in the service of the Emperor's Children in the years following the Great Scouring. After the Wolf Lord Aeska Brokenlip was killed in the depths of the hulk, a combined fleet from several Chapters began a campaign against the Cataclysm of Faith that lasted several Terran years. In addition to the Space Wolves, forces from the Dark Angels, Ultramarines, White Scars, and some of their successors participated in the campaign before the final battle was fought on the Desert World Iela.Many of the Emperor's Children's vessels were known to launch smaller interceptor craft or fighters known as Raptors. Imperial records are unclear as to the nature and role of these small vessels.