"Following the hard lessons learned during the Rangda Xenocides, the Hrud Exterminations, the Decimation of the Voregore, and the ongoing Ork Wars, it had become obvious to the Lupercalian Strategos of the 16th Legion that there existed a need for dedicated eradication units, though something less contaminating than the tried and tested Destroyer formations. Zhuhal Ghorrost, then 2nd Captain of the 86th Company, proposed the formation of a mixed arms company, combining highly mobile units of jump-enabled infantry, armed with Volkite weaponry in order to scour the biomass of the offending Xenoforms with fire and heat. Supporting this, Ghorrost proposed the deployment of Dreadnought units. Intrigued, the Lupercalian Strategos approved the proposal, and rolled it into the then-experimental Contemptor Program. With the implicit backing of Horus Lupercal, through his intermediary Strategos, Zhuhal Ghorrost was promoted to 1st captain of the 161st Assault Company. In the following decades, the 161st accrued a reputation as ruthless exterminators of any threat to the Pax Imperialis, often undertaken gruelling Xenocides, alongside the thankfully rare tragedy of nescessary Re-compliance operations on Human populations." - Excerpt from Tactical Dispositions of the Legionnes Astartes, vol. MCMXXXVI, 986.M30
1st section, Squad Spite, lead by 2nd Captain Engra Ekakkios, a so-called True Son of Chtonia. Imposing, even amongst his fellow Astartes, Captain Ekakkios embodied the directed brutality of his homeworld, and combined it with a razor-sharp tactical acumen, borne of the expert tutelage engendered upon those inducted into the 16th Legion.
2nd section, Squad Spite. Of note amongst the warriors in this pict-capt is one Othon Marr, wearing a modified Mk.IV helmet with reinforced molecular bonding studs and Mantilla-pattern re-breather. An extraordinary amount of Chtonian affectations adorn his armour, including variant heraldry.
Venerable Agathocles originally hailed from the 64th Company, but upon his internment, he was reassigned to the 161st, owing to his experience from the Destroyer Corps.
Armed with a heavy Volkite Culverin and a Dreadnought powerclaw with integrated flame-projector, the Contemptor-chassis proved highly adept at effectuating the scorched earth-ethos of the 161st.