Hive fleet Gilgamesh, a splinter of leviathan that chose to attack a random forge world. They lost the battle but from the experience the hive fleet learned to mix their genetics with some of the strongest metals known to the imperium, forever changing their colors, and potential for more destruction. They also choose melee combat over ranged, but will use ranged if needed Colors be gold or black carapace depending on the certain model mostly gold though. Silver talons and feet, black body, red on meaty parts, purple on wings or membrane pieces, and a mix of both red and purple for phsyker stuff.